Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities
Net income (loss)	$ 12,506	$ (5)
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation, amortization and impairment	17,501	20,365
Amortization of discounts, fees and deferred financing costs	1,617	1,205
Stock-based compensation	4,240	2,251
Deferred taxes	1,574	(138)
Change in fair value of income tax receivable agreement	(1,343)	(1,378)
Other non-cash charges, net	208	(1,189)
Loss (gain) on disposal of assets	432	(395)
Change in operating assets and liabilities, net of acquisitions:
Accounts receivable	10,471	(8,021)
Inventories	(405)	4,020
Prepaid expenses and other current assets	(6,369)	(3,121)
Other assets	(7,192)	(1,275)
Right-of-use assets and operating lease liabilities	(54)	(1,518)
Accounts payable	(3,415)	(1,434)
Accrued compensation and benefits	541	240
Accrued expenses and other liabilities	120,650	(1,859)
Cash provided by operating activities	150,962	7,748
Investing activities
Purchases of property, equipment and intangible assets	(11,756)	(14,169)
Proceeds from sale of clinics	0	3,300
Cash paid for acquisitions	0	(6,590)
Cash used in investing activities	(11,756)	(17,459)
Financing activities
Proceeds from revolving credit facility and term loans, net of discounts and fees	45,989	73,551
Payments on long-term debt	(50,081)	(23,069)
Dividends and dividend equivalents paid	(11)	(25)
Proceeds from exercise of stock options	1,212	67
Repurchase of vested restricted stock awards withheld on net share settlement	(430)	(338)
Distributions to noncontrolling interests	(22,961)	(21,629)
Contributions from noncontrolling interests	2,023	3,935
Purchases of equity of noncontrolling interests	(707)	(7,995)
Cash (used in) provided by financing activities	(24,966)	24,497
Increase in cash and restricted cash	114,240	14,786
Cash and restricted cash at beginning of period	34,494	55,300
Cash and restricted cash at end of period	148,734	70,086
Supplemental Disclosure of Cash Flow Information
Cash paid for income taxes	166	173
Cash paid for interest	14,323	15,292
Supplemental Disclosure of Non-Cash Financing Activities
Non-cash equity impacts of the sale or closure of clinics	(4,071)	(4,866)
Non-cash equity contributions	1,770	386
Change in liability accrued for dividend equivalent payments	7	27
Liability established for IPO Put liability (Note 5)	16,685	0
Non-cash purchases of property and equipment	$ 1,079	$ 0