CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 5,773	$ 3,849	$ 6,786	$ 8,612
Foreign currency translation adjustments	(91)	16	(65)	38
Change in fair value of cash flow hedge, net of taxes	595	2	4,889	(1,720)
COMPREHENSIVE INCOME	6,277	3,867	11,610	6,930
Less comprehensive income attributable to noncontrolling interests	734	623	3,679	1,286
COMPREHENSIVE INCOME ATTRIBUTABLE TO RADNET, INC. COMMON STOCKHOLDERS	$ 5,543	$ 3,244	$ 7,931	$ 5,644