Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,328)	$ (5,145)
Unrealized loss on derivative agreements, net of tax	(917)	(785)
Total comprehensive loss	(3,245)	(5,930)
Less: Comprehensive income attributable to noncontrolling interests	(4,906)	(5,334)
Total comprehensive loss attributable to American Renal Associates Holdings, Inc.	$ (8,151)	$ (11,264)