CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 38,133	$ 2,075	$ 8,004
Foreign currency translation adjustments	(69)	26	(49)
Change in fair value of cash flow hedge, net of taxes	2,876	(880)	508
COMPREHENSIVE INCOME	40,940	1,221	8,463
Less comprehensive income attributable to noncontrolling interests	5,890	2,022	774
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS	$ 35,050	$ (801)	$ 7,689