SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)				3 Months Ended		12 Months Ended		24 Months Ended		27 Months Ended	40 Months Ended
	Jan. 20, 2022 USD ($) $ / shares shares	Jul. 01, 2020 USD ($)	Nov. 05, 2019 USD ($)	Mar. 31, 2022 USD ($) jointVenture security incentivePlan	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Oct. 30, 2025 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2022 USD ($) jointVenture security incentivePlan	Oct. 31, 2023 USD ($)	Apr. 15, 2021 incentivePlan shares	Jun. 30, 2019 USD ($) agreement
Property, Plant and Equipment [Line Items]
Contracts receivable, factoring receivable				$ 17,000,000		$ 17,700,000			$ 17,700,000	$ 17,000,000
Deferred financing costs, net of accumulated amortization				2,000,000		2,100,000			2,100,000	2,000,000
Goodwill				570,188,000		513,820,000			513,820,000	570,188,000
Indefinite-lived intangible assets				13,200,000						$ 13,200,000
Income tax expense				$ (1,496,000)	$ (4,376,000)
Effective tax rate				15.20%	24.10%
Number of plans | incentivePlan				1						1		1
Number of shares authorized (in shares) | shares												16,500,000
Amount of loss recognized in income on derivative (current period ineffective portion)		$ 24,400,000
Share price (dollars per share) | $ / shares	$ 22.37
Total credit facilities outstanding				$ 0		0			0	$ 0
Number of securities without readily determinable fair value | security				3						3
Number of unconsolidated joint ventures | jointVenture				13						13
Management service fees				$ 5,500,000	$ 5,200,000
Medic Vision
Property, Plant and Equipment [Line Items]
Total net assets				$ 1,200,000						$ 1,200,000
Ownership percentage				14.21%						14.21%
WhiteRabbit.ai Inc.
Property, Plant and Equipment [Line Items]
Payments to acquire equity method investments			$ 1,000,000
Payments to fund loan to related parties			$ 2,500,000
Quantib B.V
Property, Plant and Equipment [Line Items]
Goodwill	$ 22,200,000
Contingent consideration, liability, period	18 months			18 months
Additional number of shares issued (in shares) | shares	113,303
Fair value of additional shares issued after execution	$ 3,000,000
Aidence Holding B.V. and Quantib B.V
Property, Plant and Equipment [Line Items]
Goodwill from acquisitions				$ 7,300,000
Revolving Credit Facility
Property, Plant and Equipment [Line Items]
Deferred financing costs, net of accumulated amortization				$ 2,000,000						$ 2,000,000
Forecast
Property, Plant and Equipment [Line Items]
Monthly amortization of deferred hedge gains								$ 300,000			$ 400,000
2019 SWAPS
Property, Plant and Equipment [Line Items]
Number of forward interest rate cap agreements | agreement													4
Notional amounts													$ 500,000,000
2019 SWAPS | 2019 Swaps - Interest Rate Contracts
Property, Plant and Equipment [Line Items]
Notional amounts													$ 100,000,000
2019 SWAPS | 2019 Swaps - Interest Rate Contracts | London Interbank Offered Rate (LIBOR)
Property, Plant and Equipment [Line Items]
Basis spread on variable rate													1.96%
2019 SWAPS | October 2023
Property, Plant and Equipment [Line Items]
Number of forward interest rate cap agreements | agreement													2
Notional amounts													$ 50,000,000
2019 SWAPS | October 2025
Property, Plant and Equipment [Line Items]
Notional amounts													200,000,000
2019 SWAPS | 2019 Swaps - Interest Rate Contracts
Property, Plant and Equipment [Line Items]
Notional amounts													$ 400,000,000
2019 SWAPS | 2019 Swaps - Interest Rate Contracts | London Interbank Offered Rate (LIBOR)
Property, Plant and Equipment [Line Items]
Basis spread on variable rate													2.05%
Restated Plan
Property, Plant and Equipment [Line Items]
Number of shares authorized (in shares) | shares												16,500,000
Minimum
Property, Plant and Equipment [Line Items]
Share-based payment award, award vesting period				3 years
Share-based payment award, expiration period				5 years
Minimum | Dignity Health | Joint Venture | Glendale Advanced Imaging
Property, Plant and Equipment [Line Items]
Variable interest entity, ownership percentage				35.00%
Minimum | Amounts returned to property and equipment
Property, Plant and Equipment [Line Items]
PPE estimated useful lives				3 years
Minimum | Leasehold Improvements
Property, Plant and Equipment [Line Items]
PPE estimated useful lives				3 years
Maximum
Property, Plant and Equipment [Line Items]
Share-based payment award, award vesting period				5 years
Share-based payment award, expiration period				10 years
Maximum | Dignity Health | Joint Venture | Glendale Advanced Imaging
Property, Plant and Equipment [Line Items]
Variable interest entity, ownership percentage				55.00%
Maximum | Amounts returned to property and equipment
Property, Plant and Equipment [Line Items]
PPE estimated useful lives				15 years
Maximum | Leasehold Improvements
Property, Plant and Equipment [Line Items]
PPE estimated useful lives				15 years
First Lien Credit Agreement | Revolving Credit Facility | Barclays | Line of Credit
Property, Plant and Equipment [Line Items]
Total credit facilities outstanding				$ 0		0			0	0
COVID-19 Pandemic
Property, Plant and Equipment [Line Items]
Advance medicare payments						100,000	$ 39,500,000			39,600,000
Proceeds from provider relief funding				0	$ 6,200,000	9,100,000	26,300,000		$ 35,400,000
Repayment of advance medicare payments				36,000,000
Deferred social security taxes				$ 8,100,000			$ 16,300,000			$ 8,100,000
Refundable claim percentage							50.00%
Reduction in deferred social security taxes						$ 7,700,000
COVID-19 Pandemic | Paycheck Protection Program loans at 1% due April 2022
Property, Plant and Equipment [Line Items]
Proceeds from PPP loans							$ 4,000,000