NATURE OF BUSINESS AND BASIS OF PRESENTATION (Details Narrative) $ in Thousands	3 Months Ended
	Mar. 31, 2022 USD ($) center segment	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)
Business Acquisition [Line Items]
Number of centers | center	351
Number of reportable segments | segment	2
BRMG and NY Groups revenues	$ 45,700	$ 46,100
BRMG and NY Groups operating expenses	45,700	46,100
Management services provided to BRMG and NY Groups	191,000	179,000
BRMG and NY Groups accounts receivable	2,141,521		$ 2,058,474
BRMG and NY Groups accounts payable	$ 1,720,071		1,712,317
ScriptSender LLC
Business Acquisition [Line Items]
Ownership percentage	49.00%
Book value of RadNet joint venture interests	$ 3,900
ScriptSender LLC | Operating Expense | Equity Method Investee
Business Acquisition [Line Items]
Expenses from transactions with related party	400	$ 600
Variable Interest Entity, Primary Beneficiary
Business Acquisition [Line Items]
BRMG and NY Groups accounts receivable	100,400		89,200
BRMG and NY Groups accounts payable	$ 16,900		$ 14,400