MERGERS AND ACQUISITIONS - Narrative (Details)				3 Months Ended			9 Months Ended
	Jun. 26, 2023 USD ($)	Jan. 20, 2023 USD ($)	Apr. 01, 2022 USD ($) care_center	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Business Acquisition [Line Items]
Termination fee paid by UnitedHealth Group							$ 106,000,000		$ 0
Restricted cash							15,904,000		$ 13,593,000
Accrued contingent consideration							0	$ 19,195,000
Option Care Health
Business Acquisition [Line Items]
Business Acquisition, Termination Fee				$ 106,000,000
UnitedHealth Group
Business Acquisition [Line Items]
Business Acquisition, Termination Fee							125,000,000
Home Health [Member] | WEST VIRGINIA
Business Acquisition [Line Items]
Goodwill recorded during period							300,000
Total purchase price for acquisition		$ 400,000
Home Health [Member] | Certificate of Need [Member] | WEST VIRGINIA
Business Acquisition [Line Items]
Acquisition, other intangibles recorded		$ 100,000
Evolution Health | Home Health [Member]
Business Acquisition [Line Items]
Payments to acquire business			$ 51,100,000
Acquisition, number of care centers acquired | care_center			15
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables					$ 7,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense					200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other					100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment					1,900,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating lease right of use assets					3,200,000
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Assets					100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets					100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets					14,200,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable					(800,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Payroll and Employee Benefits					(2,600,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accrued Expenses					(2,600,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease Liabilities					(2,800,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt					(600,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities					(9,400,000)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net					4,800,000
Goodwill recorded during period					61,700,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net					66,500,000	$ 66,500,000		$ 66,500,000
Business Acquisition Closing Payment Adjustment			$ 1,000,000			$ 1,300,000
Total purchase price for acquisition			67,800,000
Restricted cash			16,700,000				7,100,000
Accrued contingent consideration			15,700,000
Amount Released From Escrow							9,600,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount			$ 15,000,000
Goodwill, Other Increase					200,000
Decrease In Assets Acquired					200,000
Evolution Health | Home Health [Member] | Minimum [Member]
Business Acquisition [Line Items]
GoodwillDeductibleForIncomeTaxPurposesPeriod			2 years
Evolution Health | Home Health [Member] | Maximum [Member]
Business Acquisition [Line Items]
GoodwillDeductibleForIncomeTaxPurposesPeriod			5 years
Evolution Health | Home Health [Member] | License
Business Acquisition [Line Items]
Acquisition, other intangibles recorded					1,300,000
AssistedCare Home Health | Home Health [Member]
Business Acquisition [Line Items]
Payments to acquire business			$ 22,200,000
Acquisition, number of care centers acquired | care_center			2
Acquisition, other intangibles recorded			$ 700,000
Goodwill recorded during period					$ 24,000,000
GoodwillDeductibleForIncomeTaxPurposesPeriod			15 years
Total purchase price for acquisition			$ 24,700,000
Restricted cash			2,500,000				$ 2,500,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount			$ 24,000,000
AssistedCare Home Health | Home Health [Member] | Acquired Names [Member]
Business Acquisition [Line Items]
Weighted-average amortization period			1 year
Acquisition, other intangibles recorded			$ 100,000
AssistedCare Home Health | Home Health [Member] | Certificates Of Need
Business Acquisition [Line Items]
Acquisition, other intangibles recorded			200,000
AssistedCare Home Health | Home Health [Member] | License
Business Acquisition [Line Items]
Acquisition, other intangibles recorded			$ 500,000
UnitedHealth Group
Business Acquisition [Line Items]
Business Acquisition, Share Exchange Ratio	$ 101