SIGNIFICANT ACCOUNTING POLICIES - Schedule of Joint Venture Investment and Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Current assets	$ 342,685		$ 367,184
Current liabilities	(407,143)		(466,723)
Investment in joint ventures	59,321		57,893
Net revenue	390,564	$ 341,767
Net (loss) income	(14,283)	8,363
Joint Venture Interest
Schedule of Equity Method Investments [Line Items]
Total net assets	109,368		106,458
Book value of RadNet joint venture interests	50,754		49,564
Cost in excess of book value of acquired joint venture interests and other	8,567		8,329
Investment in joint ventures	59,321		57,893
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Schedule of Equity Method Investments [Line Items]
Current assets	49,091		39,304
Noncurrent assets	142,144		134,694
Current liabilities	(32,995)		(29,588)
Noncurrent liabilities	(48,872)		$ (37,952)
Net revenue	42,086	34,411
Net (loss) income	$ 2,909	$ 5,035