UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (60,109)	$ (9,369)
Adjustments to reconcile net loss to net cash provided by operations:
Depreciation and amortization expense	38,997	30,447
Non-cash operating lease costs	15,246	0
Deferred income taxes - net	(5,252)	(2,091)
Loss on extinguishment of debt	5,469	72
Amortization of deferred financing costs	3,057	2,286
Equity in earnings of joint ventures	(2,018)	(656)
Stock-based incentive compensation expense	3,898	1,671
Other adjustments	1,046	640
Changes in operating assets and liabilities:
Accounts receivable, net	71,029	(32,483)
Inventories	(6,212)	4,010
Prepaid expenses and other current assets	1,447	(593)
Accounts payable	(36,157)	8,683
Accrued compensation and employee benefits	5,312	615
Accrued expenses and other current liabilities	(3,846)	9,309
Operating lease liabilities	(11,922)	0
Other noncurrent assets and liabilities	(3,415)	(343)
Net cash provided by operating activities	16,570	12,198
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisition of property and equipment	(13,150)	(20,716)
Other investing cash flows	636	0
Business acquisitions, net of cash acquired	(700,170)	(9,917)
Net cash used in investing activities	(712,684)	(30,633)
CASH FLOWS FROM FINANCING ACTIVITIES:
Redemptions to related parties	(2,000)	0
Sale of management notes receivable	1,310	0
Exercise of stock options, vesting of restricted stock, and related tax withholdings	(2,497)	0
Proceeds from debt	981,050	1,000
Repayments of debt principal	(2,075)	(4,112)
Retirement of debt obligations	(226,738)	0
Deferred financing costs	(36,538)	0
Net cash provided by (used in) financing activities	712,512	(3,112)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	16,398	(21,547)
Cash and cash equivalents - beginning of the period	36,391	53,116
CASH AND CASH EQUIVALENTS - END OF PERIOD	52,789	31,569
Supplemental disclosure of cash flow information:
Cash paid for interest	35,531	32,110
Cash paid for income taxes	1,617	1,246
Cash paid for operating leases	$ 15,248