UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (25,915)	$ (60,109)
Adjustments to reconcile net loss to net cash provided by operations:
Depreciation and amortization expense	60,054	38,997
Non-cash operating lease costs	13,020	15,246
Deferred income taxes - net	897	(5,252)
Loss on extinguishment of debt	8,349	5,469
Amortization of deferred financing costs	4,153	3,057
Paid-in-kind interest capitalized as principal	7,525	0
Loss on interest rate swaps upon discontinuing hedge accounting	3,746	0
Equity in earnings of joint ventures	(2,364)	(2,018)
Stock-based incentive compensation expense	2,588	3,898
Other adjustments	1,589	1,046
Changes in operating assets and liabilities:
Accounts receivable, net	3,496	71,029
Inventories	(39,602)	(6,212)
Prepaid expenses and other current assets	(8,724)	1,447
Accounts payable	66,508	(36,157)
Accrued compensation and employee benefits	5,461	5,312
Accrued expenses and other current liabilities	16,768	(3,846)
Operating lease liabilities	(11,976)	(11,922)
Other noncurrent assets and liabilities	(3,845)	(3,415)
Net cash provided by operating activities	101,728	16,570
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property and equipment	(12,871)	(13,150)
Other investing cash flows	541	636
Business acquisitions, net of cash acquired	0	(700,170)
Net cash used in investing activities	(12,330)	(712,684)
CASH FLOWS FROM FINANCING ACTIVITIES:
Redemptions to related parties	0	(2,000)
Sale of management notes receivable	0	1,310
Exercise of stock options, vesting of restricted stock, and related tax withholdings	(904)	(2,497)
Proceeds from debt	0	981,050
Repayments of debt principal	(6,937)	(2,075)
Retirement of debt obligations	(125,000)	(226,738)
Deferred financing costs	0	(36,538)
Net proceeds from issuance of common stock	118,934	0
Other financing cash flows	(2,500)	0
Net cash (used in) provided by financing activities	(16,407)	712,512
NET INCREASE IN CASH AND CASH EQUIVALENTS	72,991	16,398
Cash and cash equivalents - beginning of the period	67,056	36,391
CASH AND CASH EQUIVALENTS - END OF PERIOD	140,047	52,789
Supplemental disclosure of cash flow information:
Cash paid for interest	73,224	35,531
Cash paid for income taxes	2,373	1,617
Cash paid for operating leases	$ 19,941	$ 15,248