CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS)	$ 13,775	$ (13,998)
Foreign currency translation adjustments	(12)	1
Change in fair value of cash flow hedge, net of taxes	0	(18,549)
Amount of loss reclassified from accumulated OCI into income (prior period effective portion)	925	0
COMPREHENSIVE INCOME (LOSS)	14,688	(32,546)
Less comprehensive income attributable to noncontrolling interests	4,317	2,360
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS	$ 10,371	$ (34,906)