Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net Income	$ (26,999)	$ (23,643)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	15,756	9,262
Change in fair value of preferred stock	0	6,057
Amortization of preferred stock issuance costs	0	1,058
Loss on disposal of property and equipment	37	135
Share-based compensation	1,599	523
Loss on debt restructuring	2,270	0
(Recovery of) provision for bad debts	(19)	1,459
Deferred tax (benefit) provision	(15)	568
Impairment charges	778	0
Changes in:
Accounts receivable	1,228	(15,269)
Income tax receivable	730	653
Prepaid expenses and other assets	12,879	(2,817)
Accounts payable	(12,811)	9,642
Accrued expenses and other liabilities	(9,355)	2,174
Net cash used in operating activities	(13,922)	(10,198)
Cash flows from investing activities:
Capital expenditures	(8,553)	(5,699)
Proceeds from sale of property and equipment	768	37
Net cash used in investing activities	(7,785)	(5,662)
Cash flows from financing activities:
Borrowings under revolving credit facilities	504,478	0
Payments under revolving credit facilities	(526,643)	0
Term debt borrowings	52,218	557
Term debt payments	(38,878)	(5,427)
Debt issuance costs	(2,005)	0
Payments of debt restructuring costs	(693)	0
Proceeds from issuance of common stock	450,000	0
Common stock issuance costs	(10,514)	0
Proceeds from issuance of preferred stock	0	17,500
Preferred stock issuance costs	0	(1,058)
Preferred stock payments	(402,884)	0
Issuance of restricted stock units, net of taxes paid	(8)	(75)
Payments on insurance premium financing	(5,951)	0
Payments of finance lease obligation	(3,980)	(570)
Net cash provided by financing activities	15,140	10,927
Net decrease in cash and cash equivalents	(6,567)	(4,933)
Cash and cash equivalents:
Beginning of period	11,179
End of period	4,612
Supplemental cash flow information:
Cash paid for interest	3,567	2,154
Cash refunds from income taxes, net	(698)	(562)
Non-cash capital leases and other obligations to acquire assets	27,428	276
Capital expenditures, not yet paid	$ 962	$ 0