100000 - Document - Document and Entity Information
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100010 - Statement - CONSOLIDATED BALANCE SHEETS
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100020 - Disclosure - Leases - Summary of Future Minimum Lease Payments (Details) 2
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100030 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)
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100040 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS 2
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100050 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
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100060 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY
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100070 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS
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100080 - Disclosure - Cybersecurity
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995455 - Disclosure - Nature of the Business
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995465 - Disclosure - Summary of Significant Accounting Policies
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995475 - Disclosure - Total Revenue
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995485 - Disclosure - Property and Equipment, Net
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995495 - Disclosure - Leases
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995505 - Disclosure - Goodwill and Intangible Assets
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995515 - Disclosure - Business Combinations
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995525 - Disclosure - Prepaid Expenses and Other Current Assets and Other Accrued Expenses
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995535 - Disclosure - Fair Value Measurements
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995545 - Disclosure - Long-Term Debt
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995555 - Disclosure - Stock-Based Compensation
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995565 - Disclosure - Income Taxes
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995575 - Disclosure - Commitments and Contingencies
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995585 - Disclosure - Net Loss Per Share
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995595 - Disclosure - Summary of Significant Accounting Policies (Policies)
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995605 - Disclosure - Summary of Significant Accounting Policies (Tables)
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995615 - Disclosure - Total Revenue (Tables)
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995625 - Disclosure - Property and Equipment, Net (Tables)
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995635 - Disclosure - Leases (Tables)
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995645 - Disclosure - Goodwill and Intangible Assets (Tables)
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995655 - Disclosure - Business Combinations (Tables)
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995665 - Disclosure - Prepaid Expenses and Other Current Assets and Other Accrued Expenses (Tables)
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995675 - Disclosure - Fair Value Measurements (Tables)
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995685 - Disclosure - Long-Term Debt (Tables)
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995695 - Disclosure - Redeemable Convertible Preferred Units (Tables)
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995705 - Disclosure - Stock-Based Compensation (Tables)
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995715 - Disclosure - Income Taxes (Tables)
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995725 - Disclosure - Net Loss Per Share (Tables)
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995735 - Disclosure - Nature of the Business - Additional Information (Details)
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995745 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Details)
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995755 - Disclosure - Summary of Significant Accounting Policies - Schedule of Depreciation of Property and Equipment (Details)
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995765 - Disclosure - Summary of Significant Accounting Policies - Schedule of Intangible Assets with Definite Lives (Details)
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995775 - Disclosure - Total Revenue - Additional Information (Details)
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995785 - Disclosure - Total Revenue - Schedule of Revenue From Patients And Third - Party Payors (Details)
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995795 - Disclosure - Total Revenue - Schedule of Percentage Of Revenue From Insurance Companies (Details)
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995805 - Disclosure - Property and Equipment, Net - Schedule of Property and Equipment (Details)
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995815 - Disclosure - Property and Equipment, Net - Schedule of Depreciation Expense (Details)
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995825 - Disclosure - Leases - Additional Information (Details)
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995835 - Disclosure - Leases - Summary of Components of Lease Expense (Details)
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995845 - Disclosure - Leases - Summary of Weighted Average Remaining Lease Term and Discount Rate (Details)
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995855 - Disclosure - Leases - Summary of Supplemental Cash Flow Information Related to Operating Leases (Details)
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995865 - Disclosure - Leases - Summary of Future Minimum Lease Payments (Details)
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995875 - Disclosure - Leases - Schedule Of Total Rent Expense (Details)
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995885 - Disclosure - Goodwill and Intangible Assets - Summary of Goodwill (Details)
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995895 - Disclosure - Goodwill and Intangible Assets - Summary of Intangible Assets (Details)
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995905 - Disclosure - Goodwill and Intangible Assets - Summary of Intangible Asset Amortization Expense (Details)
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995915 - Disclosure - Goodwill and Intangible Assets - Summary of Future Amortization of Intangible Assets (Details)
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995925 - Disclosure - Business Combinations - Additional Information (Details)
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995935 - Disclosure - Business Combinations - Summary of Consideration Transferred (Details)
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995945 - Disclosure - Business Combinations - Schedule of Fair Value Assets Acquired And Liabilities Assumed (Details)
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995955 - Disclosure - Business Combinations - Schedule of Fair Values of Acquired Intangible Assets (Details)
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995965 - Disclosure - Business Combinations - Schedule of Fair Values of Acquired Intangible Assets (Parenthetical) (Details)
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995975 - Disclosure - Business Combinations - Schedule of Maximum Contingent Consideration Based on the Acquisition Agreements (Details)
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995985 - Disclosure - Prepaid Expenses and Other Current Assets and Other Accrued Expenses - Schedule of Prepaid Expenses and Other Current Assets (Details)
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995995 - Disclosure - Prepaid Expenses and Other Current Assets and Other Accrued Expenses - Schedule of Other Accrued Expenses (Details)
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996005 - Disclosure - Fair Value Measurements - Summary of the Significant Assumptions Used for the Fair Value Measurement of the Contingent Consideration Liability (Details)
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996015 - Disclosure - Fair Value Measurements - Schedule of Location of the Interest Rate Swap (Details)
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996025 - Disclosure - Fair Value Measurements - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details)
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996035 - Disclosure - Fair Value Measurements - Additional Information (Details)
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996045 - Disclosure - Long-Term Debt - Additional Information (Details)
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996055 - Disclosure - Long-Term Debt - Summary of Long-term Debt Instruments (Details)
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996065 - Disclosure - Long-Term Debt - Summary of Interest Expense (Details)
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996075 - Disclosure - Long-Term Debt - Future Principal Payments on Long Term Debt (Details)
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996085 - Disclosure - Redeemable Convertible Preferred Units - Additional Information (Details)
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996095 - Disclosure - Redeemable Convertible Preferred Units - Redeemable Convertible Preferred Units (Details)
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996105 - Disclosure - Stock-Based Compensation - Additional Information (Details)
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996115 - Disclosure - Stock-Based Compensation - Summary of Restricted Stock Awards (RSA) Activity (Details)
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996125 - Disclosure - Stock-Based Compensation - Summary of Restricted Stock Unit (RSU) Activity (Details)
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996135 - Disclosure - Stock-Based Compensation - Summary of Stock Option Activity (Details)
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996145 - Disclosure - Stock-Based Compensation - Schedule of Stock Options Assumptions (Details)
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996155 - Disclosure - Stock-Based Compensation - Summary of Class B Profits Interests General and Administrative Expenses (Details)
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996165 - Disclosure - Income Taxes - Components of Income Tax Benefit (Detail)
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996175 - Disclosure - Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Detail)
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996185 - Disclosure - Income Taxes - Schedule of Provision for Income Taxes in Difference Between Statutory and Effective Income Tax Rate (Details)
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996195 - Disclosure - Income Taxes - Additional Information (Details)
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996205 - Disclosure - Commitments and Contingencies - Additional Information (Details)
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996215 - Disclosure - Net Loss Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details)
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996225 - Disclosure - Net Loss Per Share - Computation of Diluted Net Loss Per Share (Details)
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Proceeds to the company underwriting discounts or commissions and offering expenses.
Proceeds To Company Underwriting Discounts Or Commissions And Offering Expenses
Proceeds to the company underwriting discounts or commissions and offering expenses
Conversion of members capital into common stock upon closing of initial public offering shares.
Conversion Of Members Capital Into Common Stock Upon Closing Of Initial Public Offering Shares
Converted
Statement [Line Items]
Statement [Line Items]
Delayed Drawn Term Loans
Delayed Drawn Term Loans [Member]
Delayed drawn term loans member.
Cybersecurity Risk Board of Directors Oversight [Text Block]
Increase (Decrease) in Accounts Receivable
Patient accounts receivable, net
Plan Name [Domain]
Plan Name
Temporary Equity, Liquidation Preference
Liquidation Preference
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount
Tax provision at U.S. federal statutory rate
Deferred Compensation Arrangement with Individual, Allocated Share-Based Compensation Expense
Stock and unit-based compensation expense
Deferred Tax Assets, Charitable Contribution Carryforwards
Charitable contributions
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Five
2029
Business Combinations Policy [Policy Text Block]
Business Combinations
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]
Business combination fair values of assets acquired and liabilities assumed fair value of net assets.
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Fair Value Of Net Assets
Fair value of net assets
(Gain) loss on remeasurement of contingent consideration
Loss (gain) on remeasurement of contingent consideration.
Loss Gain On Remeasurement Of Contingent Consideration
Fair Value, Recurring and Nonrecurring [Table]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Revenues [Abstract]
Cash paid for interest, net
Interest Paid, Excluding Capitalized Interest, Operating Activities
Acquisition of property and equipment included in accounts payable and other accrued expenses.
Purchase Of Property Plant And Equipment Included In Accounts Payable And Accrued Expenses
Acquisition of property and equipment included in liabilities
Reclassification of members capital due to conversion.
Reclassification Of Members Capital Due To Conversion
Reclassification of common units to additional paid in capital
Business Combinations
Business Combination Disclosure [Text Block]
Finite-Lived Intangible Asset, Expected Amortization, Year Four
2028
Weighted average exercise price, exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price
Shares, Outstanding
Shares, Outstanding
Shares, Outstanding
Other, net
Other, net
Other Noncash Income (Expense)
Other Noncash Income (Expense), Total
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
Schedule of Recognized Assets Acquired and Liabilities Assumed
Option Indexed to Issuer's Equity, Type [Axis]
Business Acquisition, Percentage of Voting Interests Acquired
Business acquisition, equity percentage interests acquired
Auditor Name
Deferred Federal Income Tax Expense (Benefit)
Deferred income tax provision, Federal
Issued Units
Temporary Equity, Shares Issued
Temporary Equity, Shares Issued
Fair Value, Inputs, Level 2 [Member]
Fair Value, Inputs, Level 2
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Noncompete Agreements [Member]
Non Compete Agreements
LifeStance
LifeStance.
LifeStance [Member]
Lifestance
Business Combination, Consideration Transferred
Total consideration transferred
Total consideration transferred
Class B profits interests units.
Class B Profits Interests Units [Member]
Class B Profits Interests Units
Non Competition Agreements [Member]
Non Competition Agreements
Less: Current portion of long-term debt
Long-term Debt, Current Maturities, Total
Long-Term Debt, Current Maturities
Less: Current portion of long-term debt
Top five commercial payors.
Top Five Commercial Payors [Member]
Top five commercial payors
Lessee, Operating Leases [Text Block]
Leases
Commitments and Contingencies Disclosure [Text Block]
Commitments and Contingencies
Interest Rate Swap [Member]
Interest Rate Swap
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures
Forfeitures, value
Prepaid expenses and other current assets and other accrued expenses
Prepaid Expenses and Other Current Assets and Other Accrued Expenses
Prepaid Expenses and Other Current Assets and Other Accrued Expenses
Deferred Income Tax Liabilities, Net, Total
Deferred Income Tax Liabilities, Net
Deferred tax liability, net
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class
Depreciation, Depletion and Amortization, Total
Depreciation, Depletion and Amortization
Depreciation expense
Base Rate
Base Rate [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage
Percentage of option shares
Nonpatient service revenue.
Nonpatient Service Revenue [Member]
Nonpatient service revenue
Goodwill [Table]
Schedule Of Goodwill [Table]
Cybersecurity Risk Management Processes Integrated [Text Block]
Concentration Risk Benchmark [Axis]
Interest Expense, Nonoperating
Interest Expense, Nonoperating, Total
Interest expense, net
Federal
Federal [Member]
Federal [Member]
Total Revenue
Revenue from Contract with Customer [Text Block]
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Right-of-Use Assets
Business combination fair values of assets acquired and liabilities assumed right-of-use assets.
Right-of-use assets
Sale of Stock [Domain]
Sale of Stock
Long-Term Debt, Gross
Term loans
Stock issued during period restricted stock units released, shares.
Stock Issued During Period Restricted Stock Units Released, Shares
Issuance of common stock upon vesting of restricted stock units, Shares
Operating Leases, Rent Expense, Net
Rent expense
Total lease cost
Total lease cost
Finite-Lived Intangible Asset, Useful Life
Finite lived intangible asset, useful life
Entity Central Index Key
Entity Central Index Key
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]
Schedule of Stock Opions Assumptions
Rule 10b5-1 Arrangment Modified Flag.
Rule 10b51 Arr Modified [Flag]
Rule 10b5-1 Arrangement Modified
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period
Number of options, Canceled and forfeited
Auditor Opinion [Text Block]
Increase (Decrease) in Operating Capital [Abstract]
Change in operating assets and liabilities, net of businesses acquired:
Advertising Expense
Advertising expense
Common Stock, Shares, Issued, Total
Common Stock, Shares, Issued
Common Stock, Shares, Issued
Payor One
Payor One [Member]
Payor One
Other Noncurrent Assets [Member]
Other Noncurrent Assets
Increase (Decrease) in Prepaid Expense and Other Assets, Total
Increase (Decrease) in Prepaid Expense and Other Assets
Prepaid expenses and other current assets
Income Statement [Abstract]
Stock issued during period, value, restricted stock units releases.
Stock Issued During Period, Value, Restricted Stock Units Releases
Issuance of common stock upon vesting of restricted stock units
Entity Address, State or Province
Entity Address, State or Province
Time- based option member.
Time- Based Option [Member]
Time Based Option
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Three
2027
Other Expenses, Total
Other Expenses
Other expense
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest
LOSS BEFORE INCOME TAXES
Payor Two
Payor Two [Member]
Payor Two
Vested Class B Profits Interest
Vested of common stock profit interest.
Vested of Common Stock Profit Interest
LifeStance topCo member.
Life Stance Top Co [Member]
Life Stance Top Co
Increase (Decrease) in Other Accrued Liabilities
Other accrued expenses
Redeemable Noncontrolling Interest [Line Items]
Redeemable Noncontrolling Interest [Line Items]
Concentration Risk Type [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Customer [Axis]
Customer Concentration Risk
Customer Concentration Risk [Member]
Disclosure of accounting policy fo indemnification.
Indemnification Policy [Text Block]
Indemnification
Cost Of Goods And Service Excluding Depreciation And Amortization
Center costs, excluding depreciation and amortization shown separately below
Cost of goods and service excluding depreciation and amortization.
Finite-Lived Intangible Asset, Expected Amortization, Year Three
2027
Right-of-use assets
Deferred tax liabilities, Right of use assets.
Deferred Tax Liabilities Right of use assets
Right-of-use assets
Revolving loan,expiration date
Line of Credit Facility, Expiration Date
Aggregate Intrinsic Value, exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value
Business combination fair values of assets acquired and liabilities assumed goodwill.
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Goodwill
Goodwill
Payments of Debt Issuance Costs
Payments of debt issue costs
Number of States in which Entity Operates
Number of States in which Entity Operates
Amortization of Debt Issuance Costs
Amortization of discount and debt issue costs
Cover [Abstract]
Black Scholes Option Pricing Model
Black-Scholes Option-Pricing Model [Member]
Black-Scholes option-pricing model member.
Comprehensive Income, Policy [Policy Text Block]
Comprehensive Loss
Conversion of vested Class Profits Interests to common stock upon closing of initial public offering Value
Conversion of Vested Class Profits Interests to Common Stock Upon Closing of Initial Public Offering Value
Conversion of vested Class B Profits Interests to common stock upon closing of initial public offering, Value
Operating Expenses [Abstract]
OPERATING EXPENSES
Document Annual Report
Document Annual Report
Business combination payments of contingent consideration.
Business Combination Payments Of Contingent Consideration
Payments of contingent consideration
Third-party rent expense
Third Party.
Third Party [Member]
Payor B
Top two payor.
Top Two Payor [Member]
Top two payor
Disclosure of accounting policy fo professional liability insurance.
Professional Liability Insurance Policy [Text Block]
Professional Liability Insurance
Advertising Cost [Policy Text Block]
Advertising and Marketing Costs
Measurement Input, Counterparty Credit Risk [Member]
Counter-Party Risk Premium [Member]
Total
Total
Long term debt fair value
Long-Term Debt
Deferred Tax Assets, Net [Abstract]
Deferred tax assets
Gains related to early lease terminations
Gain (Loss) on Contract Termination
Retained Earnings (Accumulated Deficit), Ending Balance
Retained Earnings (Accumulated Deficit), Beginning Balance
Retained Earnings (Accumulated Deficit), Total
Retained Earnings (Accumulated Deficit)
Accumulated deficit
Contingent Consideration
Contingent consideration.
Contingent Consideration [Member]
Plan Name [Axis]
Plan Name
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
Schedule of Location of the Interest Rate Swap
Term Loan.
Term Loans [Member]
Term Loans
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number
Number of shares options outstanding, Beginning Balance
Number of shares options outstanding, Ending Balance
Assets, Current [Abstract]
CURRENT ASSETS
Common Stock, Capital Shares Reserved for Future Issuance
Common Stock, Capital Shares
Net deferred tax liabilities
Deferred Tax Liabilities, Net
Net deferred tax liability
Schedule of Prepaid Expenses and Other Current Assets
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]
Net Cash Provided by (Used in) Operating Activities
Net cash provided by (used in) operating activities
Issuance of common units for acquisitions of businesses
Issuance of common units for acquisitions of businesses.
Issuance Of Common Units For Acquisitions Of Businesses
Canceled and forfeited
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value
Forfeited
Accumulated Other Comprehensive Income (Loss), Net of Tax, Total
Accumulated Other Comprehensive Income (Loss), Net of Tax
Accumulated other comprehensive income
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Business combination fair values of assets acquired and liabilities assumed prepaid expenses and other current assets.
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Prepaid Expenses And Other Current Assets
Prepaid expenses and other current assets
Commercial.
Commercial [Member]
Commercial
Operating Loss Carryforwards
Operating Loss Carryforwards, Total
Operating Loss Carryforwards
Share-Based Compensation Arrangement by Share-Based Payment Award, Description
Share-based compensation arrangement by share-based payment award, description
Operating Leased Assets [Line Items]
Property, Plant and Equipment, Net, Ending Balance
Property, Plant and Equipment, Net, Beginning Balance
Property, Plant and Equipment, Net
Property and equipment, net
Total property and equipment, net
Lessee, Operating Lease, Liability, to be Paid, Year Four
2028
Temporary Equity [Table Text Block]
Summary of Preferred Units Prior to the TPG Acquisition
Net Cash Provided by (Used in) Operating Activities [Abstract]
CASH FLOWS FROM OPERATING ACTIVITIES
Type of Restructuring [Domain]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
Common Stock, Par or Stated Value Per Share
Common Stock, par value
Employee Stock Option
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]
Temporary Equity, Carrying Amount, Attributable to Parent
Temporary Equity, Carrying Amount, Attributable to Parent
Temporary Equity, Carrying Amount, Attributable to Parent
Initial Carrying Amount
Measurement Input Type [Domain]
Measurement Input Type
Schedule of Unaudited Consolidated Balance Sheets in Connection with Leases with Related Parties
Schedule of Unaudited Consolidated Balance Sheets in Connection with Leases with Related Parties [Table Text Block]
Schedule of unaudited consolidated balance sheets in connection with leases with related parties.
Percentage of liquidation preference of preferred stock.
Percentage Of Liquidation Preference Of Preferred Stock
Percentage of liquidation preference of preferred stock
OTHER COMPREHENSIVE (LOSS) INCOME
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]
Accounts Receivable [Policy Text Block]
Patient Accounts Receivable
Statement of Cash Flows [Abstract]
Counterparty Name [Axis]
Counterparty Name
Long-term debt fair value
Long-Term Debt, Fair Value
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Four
2028
Medical equipment.
Medical Equipment [Member]
Medical Equipment
Entity [Domain]
Equity Components [Axis]
Equity Components
Entity Address, Address Line One
Entity Address, Address Line One
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Schedule of Basic and Diluted Net Loss Per Share
Employee-related Liabilities, Current, Total
Employee-related Liabilities, Current
Accrued payroll expenses
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Granted
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
Intangible Asset, Finite-Lived [Table]
Schedule Of Finite Lived Intangible Assets [Table]
Payments for Underwriting Expense
Payments for underwriting expense
Finite-Lived Intangible Assets Amortization Expense [Table Text Block]
Summary of Intangible Assets Amortization Expense
Computers and Peripherals
Computer Equipment [Member]
Valuation Approach and Technique [Axis]
Valuation Approach and Technique
Property, Plant and Equipment [Line Items]
Property Plant And Equipment [Line Items]
IRC Section 162M limitation
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount
Weighted average remaining contractual life, exercisable
Share-Based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Remaining Contractual Term
Business Combination, Contingent Consideration, Liability, Measurement Input
Business Combination, Contingent Consideration, Liability, Measurement Input
Non cash operating lease costs.
Non Cash Operating Lease Costs
Non-cash operating lease costs
Nonoperating Income (Expense)
Total other expense
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Computation of Diluted Net Loss per Share
Maximum borrowing capacity
Line of Credit Facility, Maximum Borrowing Capacity
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Risk Free Interest Rate
Risk-free interest rate
Concentration Risk, Benchmark Description
Concentration Risk, Benchmark Description
Hedging Relationship [Axis]
Aggregrate cash and equity cost.
Aggregrate Cash And Equity Cost
Aggregate cost
Legal Entity of Counterparty, Type [Axis]
Legal Entity of Counterparty, Type
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number
Outstanding
Outstanding
Entity Voluntary Filers
Entity Voluntary Filers
Finite-Lived Intangible Asset, Expected Amortization, Year Two
2026
Amendment Flag
Amendment Flag
Accounting Standards Update 2016-02 [Member]
ASU 2016-02
Operating Loss Carryforwards [Table]
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Percent
Stock and unit-based compensation
Current Income Tax Expense (Benefit)
Current income tax provision
Current Federal Tax Expense (Benefit)
Current income tax provision, Federal
Operating Lease, Liability, Noncurrent
Operating lease liabilities, noncurrent
Operating lease liabilities, noncurrent
Domestic Tax Authority
Domestic Tax Jurisdiction [Member]
Additional Paid in Capital, Common Stock, Ending Balance
Additional Paid in Capital, Common Stock, Beginning Balance
Additional Paid in Capital, Common Stock
Additional paid-in capital
Extinguishment of Debt, Type [Domain]
Extinguishment of Debt, Type
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
NET LOSS
Net loss
Lessee, Lease, Description [Table]
Number of shares options, exercisable
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number
Variable Rate [Domain]
Variable Rate
Retirement expense
Defined Contribution Plan, Cost
Shares Issued, Value, Share-Based Payment Arrangement, Forfeited
Surrender of common stock
Surrender of common stock
Customer [Domain]
Interest Expense [Member]
Interest Expense
Equity Component [Domain]
Equity Component
Statistical Measurement [Domain]
Statistical Measurement
Document Financial Statement Error Correction [Flag]
Percentage of Purchase Price
Percentage of purchase price.
Percentage Of Purchase Price
Deferred State and Local Income Tax Expense (Benefit)
Deferred income tax provision, State
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period
Expiration Period
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]
Furniture, Fixtures and Equipment
Furniture and Fixtures [Member]
Class A-1 Common Units
Class A-1 units.
Class A1 Units [Member]
Disaggregation of Revenue [Table]
Cybersecurity Risk Management Processes Integrated [Flag]
Real Estate Optimization And Office Space Reductions
Real Estate Optimization And Office Space Reductions [Member]
Real estate optimization and office space reductions.
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Net loss
Preferred Stock, Shares Issued, Total
Preferred Stock, Shares Issued
Preferred Stock, Shares Issued
Operating Lease, Payments
Operating cash flows from operating leases
Stock Issued During Period, Shares, Conversion of Units
Conversion of common units into common stock upon closing of initial public offering, Shares
Conversion of common units into common stock upon closing of initial public offering, shares
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Stock Issued During Period, Shares, Employee Stock Purchase Plans
Common stock option subject to service based vesting member.
Common Stock Option Subject To Service Based Vesting [Member]
Common Stock Option Subject To Service Based Vesting
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures, Total
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures
Number of options, granted
Prepaid expenses and other current assets
Prepaid Expense and Other Assets, Current
Total
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price
Weighted average exercise price, Canceled and forfeited
Class of Stock [Domain]
Class of Stock
Other comprehensive loss
Other Comprehensive Income (Loss), Net of Tax, Total
Other Comprehensive Income (Loss), Net of Tax
Schedule of Finite-Lived Intangible Assets [Table Text Block]
Summary of Intangible Assets
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
COMPREHENSIVE LOSS
Common Stock, Shares, Outstanding, Ending Balance
Common Stock, Shares, Outstanding, Beginning Balance
Common Stock, Shares, Outstanding
Common Stock, Shares, Outstanding
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name
Fair Value Measurement, Policy [Policy Text Block]
Fair Value Measurements
Business combination fair values of assets acquired and liabilities assumed other noncurrent assets
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Other Noncurrent Assets
Other noncurrent assets
Contingent Consideration by Type [Axis]
Contingent Consideration by Type
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Components of Income Tax Benefit
Weighted Average Useful Life (Years)
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life
Preferred Stock, Par or Stated Value Per Share
Preferred Stock, par value
Revenue Benchmark
Revenue Benchmark [Member]
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount
Other adjustments
Property and equipment, disposals
Property, Plant and Equipment, Disposals
Revolving loan.
Revolving Loan [Member]
Revolving Loan
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
Summary of Restricted Stock Awards (RSA) Activity
Liabilities, Noncurrent
Total noncurrent liabilities
Finite-Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets [Line Items]
Entity Interactive Data Current
Entity Interactive Data Current
Furniture, fixtures and equipment.
Furniture Fixtures And Equipment [Member]
Furniture Fixtures And Equipment
Deferred tax assets operating lease liability
Deferred Tax Assets Operating Lease Liability
Operating lease liability
Revenue recognized as a percentage of total revenue.
Revenue Recognized As Percentage Of Total Revenue
% of Total Revenue
Legal Entity Type of Counterparty [Domain]
Legal Entity Type of Counterparty
Prepayment for debt paydown
Prepayment for debt paydown
Payment for Debt Extinguishment or Debt Prepayment Cost
Accounting Standards Update [Domain]
Goodwill [Line Items]
Goodwill [Line Items]
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Total
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals
Accruals and reserves
Consolidated Entities [Axis]
Consolidated Entities
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value
Vested
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Total
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents
CASH AND CASH EQUIVALENTS – END OF PERIOD
Cash and Cash Equivalents - Beginning of period
Statement of Financial Position Location, Balance [Axis]
Statistical Measurement [Axis]
Statistical Measurement
Finite-Lived Intangible Asset, Expected Amortization, Year Five
2029
Operating Lease, Cost
Operating lease costs
Assets measured at fair value
Assets, Fair Value Disclosure
Assets, Fair Value Disclosure, Total
Related and Nonrelated Parties [Domain]
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Summary of Future Minimum Lease Payments
Finite-Lived Intangible Assets, Gross, Total
Finite-Lived Intangible Assets, Gross
Gross Carrying Amount
Payments to Acquire Businesses, Net of Cash Acquired, Total
Payments to Acquire Businesses, Net of Cash Acquired
Acquisitions of businesses, net of cash acquired
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
Summary of Restricted Stock Unit (RSU) Activity
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant
Company's common stock
Basis of Presentation and Significant Accounting Policies [Text Block]
Basis of Presentation and Principles of Consolidation
Granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition
Unrecognized compensation expense, weighted-average period
Foreign Tax Authority
Foreign Tax Jurisdiction [Member]
Accrual for goods/services received, not invoiced
Accrual For Goods And Services Received, Not Invoiced
Accrual for goods and services received, not invoiced.
Statement of Income Location, Balance [Axis]
Income Statement Location
Assets
Total assets
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term
Expected term (years)
Restructuring Type [Axis]
Long-Term Debt, Maturities, Repayments of Principal in Rolling Year Two
2026
Schedule of Long-Term Debt Instruments [Table]
Debt Instrument [Table]
Long-Term Debt, Maturities, Repayments of Principal in Next Rolling 12 Months
2025
Schedule of percentage of revenue from insurance companies Table Text Block
Schedule Of Percentage Of Revenue From Insurance Companies Table [Text Block]
Schedule of percentage of revenue from insurance companies
Gross deferred tax liabilities
Deferred Tax Liabilities, Gross
Gross deferred tax liabilities
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period
Vested
Vested
Deferred income taxes
Increase (Decrease) in Other Deferred Liability
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Extinguishment of Debt [Axis]
Extinguishment of Debt
New Accounting Pronouncements, Policy [Policy Text Block]
Recent Accounting Pronouncements Not Yet Adopted
Entity Address, City or Town
Entity Address, City or Town
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income
Equity [Abstract]
Share based compensation arrangement by share based payment award equity instruments other than options conversion in period weighted average grant date fair value.
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Conversion In Period Weighted Average Grant Date Fair Value
Converted
Lease Obligation Incurred
Equipment financed through finance leases
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent
Other adjustments
Auditor Location
Schedule of Rent Expense [Table Text Block]
Schedule of Total Rent Expense
Schedule of Maturities of Long-Term Debt [Table Text Block]
Summary of Maturities of Long-term Debt
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]
Forfeited
Canceled and forfeited
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period
Forfeited
Canceled and forfeited
Payments for Restructuring
Cash payment for restructuring
Shareholders' Equity and Share-Based Payments [Text Block]
Stock-Based Compensation
Schedule of depreciation expense.
Schedule Of Depreciation Expense Table [Text Block]
Schedule of Depreciation Expense
Malpractice Insurance, Coverage Floor
Medical malpractice insurance, coverage per claim limit
Business combination fair values of assets acquired and liabilities assumed intangible assets.
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Intangible Assets
Intangible assets
Monte Carlo Simulation
Monte Carlo Simulation [Member]
Monte carlo simulation member.
Hedging Relationship [Domain]
Debt Instrument, Face Amount
Term loan facility
Long-Term Debt, Maturities, Repayment Terms
Long-term debt, maturities, repayment terms
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term
Weighted average remaining contractual life, vested or expected to vest
Interest Income and Interest Expense Disclosure [Table Text Block]
Summary of Interest Expense
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]
Retirement Benefits, Description
Retirement benefits, description
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]
Construction in Progress
Construction in Progress [Member]
Series A Preferred Stock [Member]
Series A Preferred Stock
Current State and Local Tax Expense (Benefit)
Current income tax provision, State
Prepaid Expense and Other Assets, Current [Abstract]
Business Combination, Contingent Consideration, Asset, Total
Business Combination, Contingent Consideration, Asset
Contingent consideration
Operating Lease, Weighted Average Discount Rate, Percent
Weighted-average discount rate
Accrued interest and penalties, net of federal income tax benefit, related to tax contingencies
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total
Interest rate swap asset member.
Interest Rate Swap Asset Member
Interest Rate Swap
Fair Value Disclosures [Abstract]
Entity Number of Employees
Entity Number of Employees
EntityPublicFloat
Entity Public Float
Stock Issued During Period, Value, New Issues
Issuance of common units
Deferred Tax Assets, Net of Valuation Allowance
Net deferred tax assets
Stock Issued During Period Common Shares New Issues.
Stock Issued During Period Common Shares New Issues
Issuance of common ,Shares
Lessee, Lease, Description [Line Items]
Liabilities, Current [Abstract]
CURRENT LIABILITIES
Accounts Receivable
Accounts Receivable [Member]
Patient Credit Payable
Patient Credit Payable
Patient credit payable
Income Taxes Paid, Net, Total
Income Taxes Paid, Net
Cash paid for taxes, net of refunds
Document Type
Document Type
Accounting Standards Update [Axis]
Redeemable convertible preferred stock year of issuance Twenty nineteen [Member]
Redeemable Convertible Preferred Stock Year Of Issuance Twenty Nineteen [Member]
2019
Impairment of assets
Asset Impairment Charges
Asset Impairment Charges, Total
Title of 12(b) Security
Title of 12(b) Security
Restricted stock award.
Restricted Stock Award [Member]
Restricted Stock Award
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Cash and Cash Equivalents, at Carrying Value, Beginning Balance
Cash and Cash Equivalents, at Carrying Value, Total
Cash and Cash Equivalents, at Carrying Value
Cash and cash equivalents
Business combination fair values of assets acquired and liabilities assumed cash.
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Cash
Cash
Statement of Financial Position Location, Balance [Domain]
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
Goodwill
Lessee, Operating Lease, Liability, to be Paid, Year Five
2029
Lease, Cost [Table Text Block]
Summary of Components of Lease Expense
Debt Instrument, Redemption, Period [Axis]
Debt Instrument, Redemption, Period
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Statement of Stockholders' Equity [Abstract]
Document Fiscal Period Focus
Document Fiscal Period Focus
Termination Fee
Termination Fee
Termination fee.
Aggregate intrinsic value, exercised
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value
Taxes related to net share settlement of equity awards included in liabilities
Payment, Tax Withholding, Share-Based Payment Arrangement
Taxes related to net share settlement of equity awards
Long-term Debt, Excluding Current Maturities, Total
Long-Term Debt, Excluding Current Maturities
Long-term debt, net
Schedule of Goodwill [Table Text Block]
Summary of Goodwill
Adoption of ASU 2016-13
Adoption of ASU Two Zero One Six to One Three
Adoption of ASU Two Zero One Six to One Three
Preferred Stock, Dividend Rate, Percentage
Percentage of dividends annual rate
Disaggregation of Revenue [Abstract]
Asset class
Asset Class [Domain]
Property, Plant and Equipment, Gross, Ending Balance
Property, Plant and Equipment, Gross, Beginning Balance
Property, Plant and Equipment, Gross, Total
Property, Plant and Equipment, Gross
Total
Office Space Reductions
Office Space Reductions [Member]
Office space reductions.
Life Stance Health Foundation
Life Stance Health Foundation [Member]
Life Stance Health Foundation [Member]
Regional Trade Names
Regional Trade Names [Member]
Conversion of Unvested Class Profits Interests to Common Stock Upon Closing of Initial Public Offering Share
Conversion of Unvested Class Profits Interests to Common Stock Upon Closing of Initial Public Offering Share
Conversion of unvested Class Profits Interests to common stock upon closing of initial public offering, Share
Lessee, Leases [Policy Text Block]
Leases
Life Stance Trade Names
Life Stance Trade Names [Member]
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount
State income taxes, net of federal benefit
Financial Instruments [Domain]
Financial Instruments
Assets, Noncurrent [Abstract]
NONCURRENT ASSETS
Sale of Stock [Axis]
Sale of Stock
Net Cash Provided by (Used in) Investing Activities [Abstract]
CASH FLOWS FROM INVESTING ACTIVITIES
Class A Common Units
Class A Common Units.
Class A Common Units [Member]
Income Tax Disclosure [Text Block]
Income Taxes
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Schedule of Provision for Income Taxes in Difference Between Statutory and Effective Income Tax Rate
Cybersecurity Risk Management, Strategy, and Governance [Abstract]
Consolidated Entities [Domain]
Consolidated Entities
Selling, General and Administrative Expense, Total
Selling, General and Administrative Expense
General and administrative expenses
Class C Common Units
Class C Common Units.
Class C Common Units [Member]
Credit Facility [Domain]
Credit Facility
Total
Finite-Lived Intangible Assets, Net, Ending Balance
Finite-Lived Intangible Assets, Net, Beginning Balance
Finite-Lived Intangible Assets, Net
Net Carrying Amount
Regional Trade Names
Trade Names [Member]
Depreciation, Depletion and Amortization, Nonproduction, Total
Depreciation, Depletion and Amortization, Nonproduction
Depreciation and amortization
Schedule of Fair Values of Acquired Intangible Assets
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]
Other Accrued Liabilities, Current
Other accrued expenses
Increase (Decrease) in Accounts Payable, Total
Increase (Decrease) in Accounts Payable
Accounts payable
Deferred Tax Liabilities, Net [Abstract]
Deferred tax liabilities
Entity Address, Address Line Two
Entity Address, Address Line Two
Liabilities and Equity [Abstract]
LIABILITIES AND STOCKHOLDERS' EQUITY
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]
Schedule of revenue from patients and third - party payors
Document Period End Date
Document Period End Date
Net Cash Provided by (Used in) Financing Activities
Net cash provided by financing activities
IRC Section 162M limitation
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent
Reclassification Of Common Stock Due To Conversion
Reclassification Of Common Stock Due To Conversion
Reclassification of Common Stock
ICFR Auditor Attestation Flag
ICFR Auditor Attestation Flag
Effective Income Tax Rate Reconciliation, Percent
Tax benefit percentage
Total
Monetary payment of settlement
Litigation Settlement, Amount Awarded to Other Party
Stockholders' Equity Note [Abstract]
Liabilities, Noncurrent [Abstract]
NONCURRENT LIABILITIES
Emerging growth company status policy.
Emerging Growth Company Status Policy [Text Block]
Emerging Growth Company Status
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Diluted net loss per share
APIC, Share-based Payment Arrangement, Increase for Cost Recognition, Total
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Unit-based compensation expense
Stock-based compensation expense
Class B Common Units
Common Class B [Member]
Accrued Liabilities, Current
Total
Lessee, Operating Lease, Liability, to be Paid, after Year Five
Thereafter
Business Combination, Consideration Transferred, Other
Cash consideration to be paid
Management fees
Management Fee Expense
Total income tax (benefit) provision
Income Tax Expense (Benefit)
INCOME TAX BENEFIT
Total income tax benefit
Equity Interest Issued or Issuable, Type [Domain]
Equity Interest Issued or Issuable, Type
Trading Symbol
Trading Symbol
Business Combinations [Abstract]
Variable Rate [Axis]
Variable Rate
Stockholders' Equity Attributable to Parent, Ending Balance
Stockholders' Equity Attributable to Parent, Beginning Balance
Equity, Attributable to Parent
Total stockholders' equity
Schedule of Total Rent Expense
Schedule of Rent Expenses [Table Text Block]
Schedule of rent expenses.
Unrealized (losses) gains on cash flow hedge, net of tax
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Total
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax
Interest rate swaps - cash flow hedge
Restricted stock unit.
Restricted Stock Unit [Member]
Restricted Stock Unit
Schedule of supplemental cash flow information related to operating leases table text block.
Schedule of Supplemental Cash Flow Information Related to Operating Leases [Table Text Block]
Summary of Supplemental Cash Flow Information Related to Operating Leases
Schedule of Depreciation of Property and Equipment
Schedule of Depreciation of Property and Equipment TextBlock
Schedule of Depreciation of Property and Equipment Text Block
Right-of-use asset, impairment
Restructuring Costs and Asset Impairment Charges
Restructuring Costs and Asset Impairment Charges, Total
Number of Real Estate Properties
Number of Real Estate Properties
Gross deferred tax assets
Deferred Tax Assets, Gross
Gross deferred tax assets
Long-Lived Tangible Asset [Axis]
Long-Lived Tangible Asset
Other Liabilities, Noncurrent, Total
Other Liabilities, Noncurrent
Other noncurrent liabilities
Share-Based Payment Arrangement [Policy Text Block]
Stock and Unit-Based Compensation
Derivative Instrument [Axis]
Payments to Acquire Businesses, Gross
Cash consideration
Business combination additions related to acquisitions.
Business Combination Additions Related To Acquisitions
Additions related to acquisitions
Restricted Stock Units RSU
Restricted Stock Units (RSUs) [Member]
Temporary Equity, Shares Authorized
Authorized Units
Temporary Equity, Shares Authorized
Variable Lease, Cost
Variable lease costs
Property, Plant and Equipment [Table]
Schedule Of Property Plant And Equipment [Table]
Cybersecurity Risk Management, Strategy, and Governance [Table]
Debt [Member]
Debt
Goodwill, Total
Goodwill
Ending balance
Beginning balance
Goodwill
Option Indexed to Issuer's Equity, Type [Domain]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount
Unrecognized compensation expense
2021 Employee Stock Purchase Plan
Two thousand twenty one employee stock purchase plan.
Two Thousand Twenty One Employee Stock Purchase Plan [Member]
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]
Measurement Input Type [Axis]
Measurement Input Type
Deferred income tax provision
Deferred Income Tax Expense (Benefit)
Deferred income taxes
Deferred income tax provision
Leases [Abstract]
EBITDA based earn-outs member.
E B I T D A Based Earn Outs [Member]
E B I T D A Based Earn Outs
Business combination fair values of assets acquired and liabilities assumed total assets acquired.
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Total Assets Acquired
Total assets acquired
Use of Estimates, Policy [Policy Text Block]
Use of Accounting Estimates
Series A Redeemable Convertible Preffered Units.
Series A Redeemable Convertible Preffered Units [Member]
Series A Redeemable Convertible Preferred Units [Member]
2022 Credit Agreement
2022 Credit Agreement member.
Two Thousand Twenty Two Credit Agreement [Member]
Proceeds from Issuance of Long-term Debt, Total
Proceeds from Issuance of Long-Term Debt
Proceeds from long-term debt, net of discount
Assets, Noncurrent
Total noncurrent assets
Percentage of total revenue
Concentration Risk, Percentage
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]
Intangible Assets
Cash and Cash Equivalents, Policy [Policy Text Block]
Cash and Cash Equivalents
Stock Issued During Period, Value, Conversion of Convertible Securities
Conversion of Redeemable Class A Units into common stock upon closing of initial public offering, Value
Related-party rent expense
Related Party
Related Party [Member]
Measurement Input, Price Volatility [Member]
Volatility [Member]
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule Of Business Acquisitions By Acquisition [Table]
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate
Expected dividend yield
Business combination loss on remeasurement.
Business Combination Loss On Remeasurement
Gain on remeasurement
Security Exchange Name
Security Exchange Name
Two Thousand Twenty Four Credit Agreement [Member]
Two Thousand Twenty Four Credit Agreement [Member]
2024 Credit Agreement
Indefinite-Lived Intangible Assets Acquired
Acquired intangible assets, Fair value
Income (Loss) from Continuing Operations, Per Basic Share
Net loss per share, basic
NET LOSS PER SHARE, BASIC
Business combination fair values of assets acquired and liabilities assumed property and equipment.
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Property And Equipment
Property and equipment
Counterparty Name [Domain]
Counterparty Name
Operating Loss Carryforwards [Line Items]
Business Acquisition, Acquiree [Domain]
Business Acquisition, Acquiree
Operating Expenses
Total operating expenses
Weighted average exercise price, Exercised
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Weighted Average Grant Date Fair Value
Summary of Consideration Transferred
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block]
Post-IPO
Post-IPO [Member]
Post-ipo.
Cash Flow Hedging [Member]
Cash Flow Hedging
Long-Lived Tangible Asset [Domain]
Long-Lived Tangible Asset
Stock Issued During Period, Value, Issued for Services
Endowment of shares to the LifeStance Health Foundation, Value
Class of Stock [Axis]
Class of Stock
Total patient service revenue.
Total Patient Service Revenue [Member]
Total patient service revenue
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment
Less: Accumulated depreciation
Legal Entity [Axis]
Fair Value Disclosures [Text Block]
Fair Value Measurements
Internal-use software
Software and Software Development Costs [Member]
Lessee, Operating Lease, Liability, to be Paid, Year Three
2027
Weighted- average grant date fair value, granted
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value
Estimated fair value per option granted
Maximum [Member]
Maximum
Liabilities and Equity
Total liabilities and stockholders' equity
Gain (Loss) on Extinguishment of Debt, Total
Gain (Loss) on Extinguishment of Debt
Loss on debt extinguishment
Operating Lease, Right-of-Use Asset
Right-of-use assets
Right-of-use assets
Number of options, Exercised
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares
Supplemental Cash Flow Information [Abstract]
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Conversion of Unvested Class Profits Interests to Common Stock Upon Closing of Initial Public Offering Value
Conversion of Unvested Class Profits Interests to Common Stock Upon Closing of Initial Public Offering Value
Conversion of unvested Class B Profits Interests to restricted stock upon closing of initial public offering, Value
Leasehold Improvements
Leasehold Improvements [Member]
Entity Ex Transition Period
Entity Ex Transition Period
Contingent consideration, at initial fair value
Contingent Consideration at Initial Fair Value
Contingent consideration at initial fair value.
Liabilities
Total liabilities
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV
T P G Acquisition
TPG Acquisition .
T P G Acquisition [Member]
Cost of Revenue Excluding Depreciation And Amortization [Policy Text Block]
Cost of revenue excluding depreciation and amortization.
Center Costs, Excluding Depreciation and Amortization
Assets, Current
Total current assets
Net Cash Provided by (Used in) Investing Activities
Net cash provided by (used in) investing activities
Non-Rule 10b5-1Arrangement Modified Flag.
Non Rule 10b51Arr Modified [Flag]
Non-Rule 10b5-1 Arrangement Modified
Payor A
Top one payor.
Top One Payor [Member]
Top one payor
Issuance of common , Shares
Stock Issued During Period, Shares, New Issues
Issuance of common units to new investors - Shares
Payment for Contingent Consideration Liability, Financing Activities
Payments of contingent consideration
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent
Valuation allowance
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period
Vesting Period
Percentage of purchase price.
Percentage Of Conversion Of Purchase Price
Percentage of purchase price
Entity Filer Category
Entity Filer Category
Goodwill and Intangible Assets Disclosure [Text Block]
Goodwill and Intangible Assets
Property, Plant and Equipment [Abstract]
Debt Instrument, Redemption, Period [Domain]
Debt Instrument, Redemption, Period
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Total
Equity, Including Portion Attributable to Noncontrolling Interest
Balance
Balance
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Nature of the Business
Schedule Of Finite Lived Intangible Assets Acquired As Part Of Business Acquisition
Schedule Of Finite Lived Intangible Assets Acquired As Part Of Business Acquisition Text Block
Schedule Of Finite Lived Intangible Assets Acquired As Part Of Business Acquisition Text Block
Schedule of Intangible Assets with Definite Lives
Redeemable convertible preferred stock year of issuance Twenty seventeen member
Redeemable Convertible Preferred Stock Year Of Issuance Twenty Seventeen [Member]
2017
Derivative, Notional Amount
Current Fiscal Year End Date
Current Fiscal Year End Date
Non cash leases activity abstract.
Non Cash Leases Activity Abstract
Noncash lease activity
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Property, Plant and Equipment, Policy [Policy Text Block]
Property and Equipment, net
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Less: imputed interest
Less: imputed interest
Temporary Equity, Par or Stated Value Per Share
Issuance Price per Unit
Share-based Payment Arrangement, Noncash Expense, Total
Share-Based Payment Arrangement, Noncash Expense
Stock-based compensation
Aggregate intrinsic value outstanding, Ending Balance
Aggregate intrinsic value outstanding, Beginning Balance
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value
Related and Nonrelated Parties [Axis]
Business Combination, Contingent Consideration, Liability, Current
Contingent consideration
Entity Registrant Name
Entity Registrant Name
Ending balance
Beginning balance
Ending balance
Business Combination, Contingent Consideration, Liability, Total
Business Combination, Contingent Consideration, Liability
Preferred Stock, Accretion of Redemption Discount
Accretion of Redeemable Class A units
Accretion of Redeemable Class A units
Retirement Plan
Postemployment Benefit Plans, Policy [Policy Text Block]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]
2021 Equity Incentive Plan
Two Thousand Twenty One Equity Incentive Plan [Member]
2021 equity incentive plan.
Earnings Per Share [Text Block]
Net Loss Per Share
Entity Emerging Growth Company
Entity Emerging Growth Company
Money Market Funds
Money Market Funds [Member]
Other Liabilities, Current, Total
Other Liabilities, Current
Other current liabilities
Weighted-average shares used to compute basic net loss per share
Weighted Average Number of Shares Outstanding, Basic, Total
Weighted Average Number of Shares Outstanding, Basic
Weighted-average shares used to compute basic and diluted net loss per share
Consolidation, Variable Interest Entity, Policy [Policy Text Block]
Variable Interest Entities
Common Stock, Shares Authorized
Common Stock, Shares Authorized
Property, Plant and Equipment, Useful Life
Estimated useful lives
Schedule of Long-Term Debt Instruments [Table Text Block]
Summary of Long-term Debt Instruments
Concentration Risk Type [Axis]
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 1
Interest limitation
Deferred Tax Asset, Interest Carryforward
Debt Disclosure [Abstract]
Long-Term Debt [Text Block]
Long-Term Debt
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price
Weighted average exercise price, vested or expected to vest
Documents Incorporated by Reference [Text Block]
Documents Incorporated by Reference
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price
Weighted average exercise price, granted
Amortization of Intangible Assets, Total
Amortization of Intangible Assets
Amortization expense
Financial Instrument [Axis]
Financial Instrument
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term
Weighted average remaining term in years, Outstanding, Ending
Earnings Per Share, Policy [Policy Text Block]
Net Loss Per Share
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Debt, Policy [Policy Text Block]
Debt Issue Costs
Revenue [Policy Text Block]
Total Revenue
Acquisition of Non Medical Assets
Acquisition Of Non Medical Assets
Acquisition of Non Medical Assets
Share-Based Payment Arrangement [Abstract]
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Impairment of Long-Lived Assets
Collaborative Arrangement and Arrangement Other than Collaborative [Table]
Schedule Of Collaborative Arrangements And Noncollaborative Arrangement Transactions [Table]
Goodwill, Measurement Period Adjustment
Measurement period adjustments
Goodwill, Impairment Loss
Goodwill Impairment
Cybersecurity Risk Role of Management [Text Block]
Cash paid for amounts included in measurement abstract.
Cash Paid For Amounts Included In Measurement Abstract
Cash paid for amounts included in the measurement of lease liabilities
Accounting Policies [Abstract]
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Summary of Stock Option Activity
Probability-weighted analysis member.
Probability Weighted Analysis [Member]
Probability Weighted Analysis
Loan withdrawal amount
Revolving loan outstanding amount
Long-Term Line of Credit
Long-term Line of Credit, Total
Income Tax Disclosure [Abstract]
Equity, Attributable to Parent [Abstract]
STOCKHOLDERS' EQUITY
Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]
SUPPLEMENTAL DISCLOSURES OF NON CASH INVESTING AND FINANCING ACTIVITIES
Expected litigation settlement expense amount
Litigation Settlement, Fee Expense
Reclassification of redeemable investor units to additional paid in capital due to conversion.
Reclassification Of Redeemable Investor Units To Additional Paid In Capital Due To Conversion
Reclassification of redeemable investor units
Statement [Table]
Statement [Table]
Segment Reporting, Policy [Policy Text Block]
Segment Information
Property, Plant and Equipment [Table Text Block]
Schedule of Property and Equipment
Gain (loss) on remeasurement of contingent consideration
Business combination remeasurement gain loss on contingent consideration.
Business Combination Remeasurement Gain Loss On Contingent Consideration
Accrued Liabilities and Other Liabilities [Abstract]
Preferred Stock, Shares Authorized
Preferred Stock, Shares Authorized
Business combination fair values of assets acquired and liabilities assumed patient accounts receivable.
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Patient Accounts Receivable
Patient accounts receivable
Equity Interest Type [Axis]
Equity Interest Type
Revenue from Contract with Customer, Including Assessed Tax
Amount
Securities Act File Number
Entity File Number
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS
Earnings Per Share [Abstract]
Percentage of deduction on pay roll.
Percentage Of Deduction On Payroll
Percentage of deduction on pay roll
Finite-Lived Intangible Asset, Expected Amortization, after Year Five
Thereafter
Stock-based compensation
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-Based Compensation Cost
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent
State income taxes, net of federal benefit
Other receivables
Other Receivables
Statement of Financial Position [Abstract]
Interest expense, net
Interest expense, net
Interest Expense, Total
Interest Expense, Operating and Nonoperating
IPO [Member]
IPO
Entity Incorporation, Date of Incorporation
Organisation incorporated date
LOSS FROM OPERATIONS
Operating Income (Loss)
Shares Issued, Price Per Share
Shares offering, price per share
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate
Volatility
Derivative Asset, Total
Derivative Asset
Entity Shell Company
Entity Shell Company
Accrued professional fees
Accrued Professional Fees, Current
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Summary of the Significant Assumptions Used for the Fair Value Measurement of the Contingent Consideration Liability
Entity Tax Identification Number
Entity Tax Identification Number
Government [Member]
Government
Entity Current Reporting Status
Entity Current Reporting Status
Series A-1 Redeemable Convertible Preferred Units.
Series A1 Redeemable Convertible Preferred Units [Member]
Series A1 Redeemable Convertible Preferred Units [Member]
Net loss available to common stockholders'
Net Income (Loss) Available to Common Stockholders, Basic
NET LOSS AVAILABLE TO COMMON STOCKHOLDERS/MEMBERS
Delayed Drawn term Loans
Delayed Drawn Loans.
Delayed Drawn Loans [Member]
Malpractice Insurance, Annual Coverage Limit
Medical malpractice insurance, annual coverage per clinician
Internal-use Software
Software Development [Member]
Property, Plant and Equipment Disclosure [Text Block]
Property and Equipment, Net
Document Fiscal Year Focus
Document Fiscal Year Focus
Acquisitions of outpatient mental health practices.
Acquisitions Of Outpatient Mental Health Practices
Acquisitions of outpatient mental health practices
Preferred Stock, Value, Issued, Ending Balance
Preferred Stock, Value, Issued, Beginning Balance
Preferred Stock, Value, Issued, Total
Preferred Stock, Value, Issued
Preferred stock - par value $0.01 per share; 25,000 shares authorized as of December 31, 2024 and December 31, 2023; 0 shares issued and outstanding as of December 31, 2024 and December 31, 2023
Year of issuance of Preferred stocks
Year Of Issuance Of Preferred Stocks
Year of Issuance
Repayments of Long-term Debt, Total
Repayments of Long-Term Debt
Payments of long-term debt
Accumulated Amortization
Finite-Lived Intangible Assets, Accumulated Amortization
Accumulated Amortization
Business Acquisition [Axis]
Business Acquisition
City Area Code
City Area Code
Liabilities, Current
Total current liabilities
Derivative Contract [Domain]
Schedule of Gain on the Hedged Item [Table Text Block]
Schedule of Gain on the Hedged Item [Table Text Block]
Schedule of Gain on the Hedged Item
Outpatient Mental Health Practices [Member]
Outpatient Mental Health Practices [Member]
Outpatient Mental Health Practices
Surrender of common stock, included in non-cash investing and financing activities.
Surrender Of Common Stock
Surrender of common stock
Surrender of common stock
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent
Tax provision at U.S. federal statutory rate
Stock Issued During Period, Shares, Conversion of Convertible Securities
Conversion of Redeemable Class A Units into common stock upon closing of initial public offering, Shares
Conversion of Redeemable Class A Units into common stock upon closing of initial public offering, Shares
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Local Phone Number
Local Phone Number
Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]
Schedule of Maximum Contingent Consideration Based on the Acquisition Agreements
Preferred Stock, Shares Outstanding, Ending Balance
Preferred Stock, Shares Outstanding, Beginning Balance
Preferred Stock, Shares Outstanding
Preferred Stock, Shares Outstanding
Shares Issued, Shares, Share-Based Payment Arrangement, Forfeited
Surrender of common stock, shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Termination fee
Exit or Disposal of office space
Business Exit Costs
Income Tax Jurisdiction [Axis]
Income Tax, Policy [Policy Text Block]
Income Taxes
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies Disclosure [Abstract]
Federal Funds Rate
Fed Funds Effective Rate Overnight Index Swap Rate [Member]
Fair Value, by Balance Sheet Grouping [Table]
Debt Issuance Costs, Net, Total
Debt Issuance Costs, Net
Less: Unamortized debt issue costs
Less: Unamortized discount and debt issue costs
Derivative, Fixed Interest Rate
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Components of Net Deferred Tax Assets and Liabilities
Operating Lease, Liability, Current
Operating lease liabilities, current
Operating lease liabilities, current
Temporary Equity Disclosure [Abstract]
Derivative Asset, Current, Statement of Financial Position [Extensible Enumeration]
Issuance of common units for acquisitions of businesses.
Issuance Of Common Units Shares For Acquisitions Of Businesses
Issuance of common units for acquisitions of businesses, shares
Income Tax Jurisdiction [Domain]
Computers and peripherals.
Computers And Peripherals [Member]
Computers And Peripherals
Retained Earnings [Member]
Accumulated Deficit
Over-Allotment Option [Member]
Over-Allotment Option
Prepaid Expenses and Other Current Assets [Member]
Prepaid Expenses and Other Current Assets
Payments to Acquire Property, Plant, and Equipment, Total
Payments to Acquire Property, Plant, and Equipment
Purchases of property and equipment
Selling Shareholders [Member]
Selling Shareholders [Member]
Selling Shareholders
Document Transition Report
Document Transition Report
Lessee, Operating Lease, Liability, to be Paid, Year Two
2026
Self-Pay [Member]
Self-pay
Total liabilities assumed
Business combination fair values of assets acquired and liabilities assumed total liabilities assumed.
Business Combination Fair Values Of Assets Acquired And Liabilities Assumed Total Liabilities Assumed
Total liabilities assumed
Total liabilities assumed
Valuation Approach and Technique [Domain]
Valuation Approach and Technique
Antidilutive Security, Excluded EPS Calculation [Table]
Concentration Risk, Credit Risk, Policy [Policy Text Block]
Concentrations of Risk and Significant Customers
Auditor Firm ID
Minimum
Minimum [Member]
Operating loss carryforwards to expire
Operating Loss Carry Forward Expiration
Operating loss carry forward expiration.
Common Stock
Common Stock [Member]
Common Stock
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value
Aggregate intrinsic value, vested or expected
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value
Outstanding
Outstanding
Additional Paid-in Capital [Member]
Additional Paid-in Capital
Entity Well-known Seasoned Issuer
Entity Well-known Seasoned Issuer
Increase decrease in operating lease liabilities.
Increase Decrease in Operating Lease Liabilities
Operating lease liabilities
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Statement of Income Location, Balance [Domain]
Income Statement Location
Lessee, Operating Lease, Liability, to be Paid, Year One
2025
Other Assets, Noncurrent
Other noncurrent assets
Derivative Instruments, Gain (Loss) [Table Text Block]
Summary of the Effects of the Company's Derivative Qualifying and Designated as a Hedging Instrument Recognized
Unused revolving loan commitment fee percentage
Debt Instrument Unused Borrowing Capacity Fee Percentage
Debt instrument unused borrowing capacity fee percentage.
Performance Shares [Member]
Performance Shares
Other current assets
Other Assets, Current
Goodwill and Intangible Assets Disclosure [Abstract]
Entity Common Stock, Shares Outstanding
Entity Common Stock, Shares Outstanding
Disaggregation of Revenue [Line Items]
Income (Loss) from Continuing Operations, Per Diluted Share
Net loss per share, diluted
NET LOSS PER SHARE, DILUTED
Business acquisitions
Goodwill, Acquired During Period
Maximum Contingent Consideration Based On Acquisition Agreements
Maximum Contingent Consideration Based On Acquisition Agreements
Maximum contingent consideration based on acquisition agreements
Finite-Lived Intangible Asset, Expected Amortization, Year One
2025
Summary of Unit Based Compensation Expense
Unit-based compensation expense within general and administrative expenses
Summary Of Unit Based Compensation Expense Table [Text Block]
Prepaid bonuses and advances
Prepaid Bonuses and Advances
Prepaid bonuses and advances.
Share based compensation arrangements by share based payment award options grants in period total grant date fair value.
Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Total Grant Date Fair Value
Grant-date fair value of stock options granted
Redeemable Noncontrolling Interest [Table]
Redeemable Noncontrolling Interest By Legal Entity [Table]
Common Stock, Value, Issued, Ending Balance
Common Stock, Value, Issued, Beginning Balance
Common Stock, Value, Issued, Total
Common Stock, Value, Issued
Common stock - par value $0.01 per share; 800,000 shares authorized as of December 31, 2024 and December 31, 2023; 382,735 and 378,725 shares issued and outstanding as of December 31, 2024 and December 31, 2023 ,respectively
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]
Stock Issued During Period, Value, Conversion of Units
Conversion of common units into common stock upon closing of initial public offering, Value
Accrued payroll expenses
Increase (Decrease) in Employee Related Liabilities
Increase (Decrease) in Employee Related Liabilities, Total
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Summary of Future Amortization of Intangible Assets
Class A-2 Common Units
Class A2 units.
Class A2 Units [Member]
OTHER EXPENSE
Other Nonoperating Income (Expense) [Abstract]
Contingent Consideration Type [Domain]
Contingent Consideration Type
Operating Lease, Liability
Total lease liabilities
Total lease liabilities
Schedule of Accrued Liabilities [Table Text Block]
Schedule of Other Accrued Expenses
Deferred Tax Assets, Operating Loss Carryforwards, Total
Deferred Tax Assets, Operating Loss Carryforwards
Net operating losses
COMMITMENT AND CONTINGENCIES (see Note 13)
Commitments and Contingencies
Transaction costs
Transaction costs.
Transaction Costs
Weighted-average shares used to compute diluted net loss per share
Weighted Average Number of Shares Outstanding, Diluted
Weighted Average Number of Shares Outstanding, Diluted, Total
Summary of Significant Accounting Policies
Significant Accounting Policies [Text Block]
Class A Redeemable Units
Redeemable Convertible Preferred Stock [Member]
Patient accounts receivable, net
Accounts Receivable, after Allowance for Credit Loss, Current, Total
Accounts Receivable, after Allowance for Credit Loss, Current
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number
Number of shares options, vested or expected to vest
Lessee, Operating Lease, Liability, to be Paid
Total lease payments
Partners' Capital Account, Units, Converted
Number of units converted
Contingent consideration incurred in acquisitions of businesses.
Contingent Consideration Incurred In Acquisitions Of Businesses
Contingent consideration incurred in acquisitions of businesses
Cybersecurity Risk Management Third Party Engaged [Flag]
Deferred tax liabilities fixed assets.
Deferred Tax Liabilities Fixed Assets
Fixed assets
Property and equipment
Concentration Risk Benchmark [Domain]
Entity Small Business
Entity Small Business
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
Debt Instrument, Basis Spread on Variable Rate
Debt instrument, basis spread on variable rate
FTE based earn-outs member.
F T E Based Earn Outs [Member]
F T E Based Earn Outs
Intangibles
Deferred Tax Liabilities, Intangible Assets
Intangibles
Stock Issued During Period, Shares, Issued for Services
Endowment of shares to the LifeStance Health Foundation, Shares
Revenues, Total
Revenues
TOTAL REVENUE
Other accrued expense.
Other Accrued Expense
Other accrued expense
Credit Facility [Axis]
Credit Facility
Revolving Credit Facility
Revolving Credit Facility [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures
Forfeitures, shares
Compensation Related Costs, Policy [Policy Text Block]
Center Costs, Excluding Depreciation and Amortization
Net Cash Provided by (Used in) Financing Activities [Abstract]
CASH FLOWS FROM FINANCING ACTIVITIES
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price
Weighted average exercise price outstanding, Beginning Balance
Weighted average exercise price outstanding, Ending Balance
Restricted Stock Awards RSA
Restricted stock awards (RSAs).
Restricted Stock Awards (RSAs) [Member]
Fair value by asset class
Asset Class [Axis]
Intangible Assets, Net (Excluding Goodwill), Total
Intangible Assets, Net (Excluding Goodwill)
Intangible assets, net
State and Local Jurisdiction
State and Local Jurisdiction [Member]
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Right-of-use lease assets obtained in exchange for new operating lease liabilities
Derivative percent of debt exposed.
Derivative Percent of Debt Exposed
Series A - 1 Preferred Stock.
Series A1 Preferred Stock [Member]
Series A1 Preferred Stock
Deferred Tax Assets, Valuation Allowance
Valuation allowance
Valuation allowance
Conversion of vested Class Profits Interests to common stock upon closing of initial public offering,shares
Conversion of vested Class Profits Interests to common stock upon closing of initial public offering
Conversion of Vested Class Profits Interests to Common Stock Upon Closing of Initial Public Offering Shares
Fair Value, Inputs, Level 3 [Member]
Fair Value, Inputs, Level 3
Operating Lease, Weighted Average Remaining Lease Term
Weighted-average remaining lease term (in years)
Increased Valuation Allowance
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount
Valuation allowance
Cybersecurity Risk Management Positions or Committees Responsible [Flag]
Accounts Payable, Current, Total
Accounts Payable, Current
Accounts payable
Deferred Offering Costs
Deferred offering costs
Liabilities, Fair Value Disclosure
Liabilities, Fair Value Disclosure, Total
Total liabilities measured at fair value
Stock and unit-based compensation
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-Based Payment Arrangement, Amount
Redeemable convertible preferred stock year of issuance Twenty eighteen [Member]
Redeemable Convertible Preferred Stock Year Of Issuance Twenty Eighteen [Member]
2018
May 2020 Credit Agreement
May 2020 credit agreement.
May Two Thousand Twenty Credit Agreement [Member]
Short-Term Lease, Cost
Short-term lease costs