CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash Flows from Operating Activities:
Net income	$ 50,292	$ 32,046
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,555	5,338
Non-cash compensation	7,307	5,909
Amortization and impairment of operating lease right of use assets	9,850	9,058
Loss on disposal of property and equipment	14	55
Write-off of other comprehensive income	0	(15)
Deferred income taxes	7,411	1,228
Equity in earnings from equity method investments	(1,118)	(477)
Amortization of deferred debt issuance costs/debt discount	216	220
Return on equity investment	1,500	2,369
Changes in operating assets and liabilities, net of impact of acquisitions:
Patient accounts receivable	(20,448)	(25,459)
Other current assets	(2,874)	(5,756)
Other assets	(115)	417
Accounts payable	(3,374)	(2,673)
Accrued expenses	8,370	(10,336)
Other long-term obligations	(808)	3,060
Operating lease liabilities	(9,014)	(8,132)
Operating lease right of use assets	(762)	(817)
Net cash provided by operating activities	54,002	6,035
Cash Flows from Investing Activities:
Proceeds from sale of deferred compensation plan assets	19	16
Proceeds from the sale of property and equipment	42	12
Purchases of property and equipment	(1,618)	(1,434)
Acquisitions of businesses, net of cash acquired	0	(69,349)
Net cash used in investing activities	(1,557)	(70,755)
Cash Flows from Financing Activities:
Proceeds from issuance of stock upon exercise of stock options	364	1,184
Proceeds from issuance of stock to employee stock purchase plan	1,048	860
Shares withheld to pay taxes on non-cash compensation	(6,774)	(4,050)
Noncontrolling interest distribution	(518)	(360)
Proceeds from borrowings under revolving line of credit	215,200	187,500
Repayments of borrowings under revolving line of credit	(186,200)	(37,500)
Principal payments of long-term obligations	(2,692)	(1,592)
Purchase of company stock	(72,886)	0
Provider relief fund advance	(5,000)	0
Net cash (used in) provided by financing activities	(57,458)	146,042
Net (decrease) increase in cash, cash equivalents and restricted cash	(5,013)	81,322
Cash, cash equivalents and restricted cash at beginning of period	83,357	96,490
Cash, cash equivalents and restricted cash at end of period	78,344	177,812
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	1,011	1,755
Cash paid for income taxes, net of refunds received	971	5,272
Cash paid for operating lease liabilities	9,776	8,949
Cash paid for finance lease liabilities	503	499
Supplemental Disclosures of Non-Cash Activity:
Right of use assets obtained in exchange for operating lease liabilities	10,548	6,437
Right of use assets obtained in exchange for finance lease liabilities	177	254
Reductions to right of use assets resulting from reductions to operating lease liabilities	$ 279	$ 159