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Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 21,757	$ 15,397	$ 53,642	$ 36,877
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization			25,336	24,639
Amortization of debt issuance costs and non-cash interest			1,756	2,489
Gain on disposal of property and equipment			(1,176)	(1,042)
Gain on debt extinguishment, net	(968)	0	(2,032)	0
Deferred taxes	6,120	4,723	17,413	10,946
Stock-based compensation expense			5,690	7,961
Change in fair value of interest rate swap			(41)	251
Changes in operating assets and liabilities (Note 15)			35,154	10,134
Net cash provided by operating activities			135,742	92,255
Cash flows from investing activities:
Capital expenditures			(39,315)	(22,088)
Proceeds from sale of property and equipment			2,093	1,557
Net cash used in investing activities			(37,222)	(20,531)
Cash flows from financing activities:
Repayments of debt			(44,184)	(52,695)
Distributions to noncontrolling interest owners			(1,959)	0
Other			(603)	9,137
Net cash used in financing activities			(46,746)	(43,558)
Net change in cash, cash equivalents, and restricted cash			51,774	28,166
Cash, cash equivalents, and restricted cash at beginning of period			72,642	50,562
Cash, cash equivalents, and restricted cash at end of period	124,416	78,728	124,416	78,728
Less: restricted cash (Other current assets)	(6,714)	(6,135)	(6,714)	(6,135)
Cash and cash equivalents at end of period	$ 117,702	$ 72,593	117,702	72,593
Non-cash items:
Capital expenditures			$ 116	$ 0

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