Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Patient service operating revenues	$ 193,182	$ 191,762
Operating expenses:
Patient care costs	154,222	148,181
General and administrative	24,905	25,599
Depreciation, amortization and impairment	8,527	10,066
Certain legal and other matters (Note 15)	2,287	5,291
Total operating expenses	189,941	189,137
Operating income	3,241	2,625
Interest expense, net	(11,012)	(8,750)
Change in fair value of income tax receivable agreement	1,699	1,682
Loss before income taxes	(6,072)	(4,443)
Income tax (benefit) expense	(3,744)	702
Net loss	(2,328)	(5,145)
Less: Net income attributable to noncontrolling interests	(4,906)	(5,334)
Net loss attributable to American Renal Associates Holdings, Inc.	(7,234)	(10,479)
Less: Change in the difference between the redemption value and estimated fair value for accounting purposes of the related noncontrolling interests	(258)	(741)
Net loss attributable to common shareholders	$ (7,492)	$ (11,220)
Loss per share (Note 12):
Basic (in USD per share)	$ (0.23)	$ (0.35)
Diluted (in USD per share)	$ (0.23)	$ (0.35)
Weighted-average number of common shares outstanding
Basic (in shares)	32,459,792	32,187,715
Diluted (in shares)	32,459,792	32,187,715