Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net Income	$ (57,806)	$ (1,839)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	19,302	19,761
Loss (gain) on disposal of property and equipment	492	(236)
Share-based compensation	1,268	1,126
Change in fair value of preferred stock	8,928	0
Amortization Of Preferred Stock Issuance Costs	16,112	0
Loss from debt extinguishment	9,827	0
Provision for bad debts	1,601	1,450
Deferred tax provision	(13,904)	367
Changes in:
Accounts receivable	(12,271)	(4,095)
Income tax receivable	3,551	(4,230)
Prepaid expenses and other assets	3,438	12,922
Accounts payable	(20,883)	17,257
Accrued expenses and other liabilities	988	(7,025)
Net cash (used in) provided by operating activities	(39,357)	35,458
Cash flows from investing activities:
Capital expenditures	(7,278)	(10,631)
Proceeds from sale of property and equipment	1,970	5,082
Net cash used in investing activities	(5,308)	(5,549)
Cash flows from financing activities:
Borrowings under revolving credit facilities	63,368	121,745
Payments under revolving credit facilities	(236,068)	(141,394)
Debt payments	(277,750)	(7,500)
Debt issuance costs	(842)	(677)
Cash collateralization of letters of credit	(20,737)	0
Payment for Debt Extinguishment or Debt Prepayment Cost	(4,911)	0
Payments of Stock Issuance Costs	(16,112)	0
Proceeds from issuance of preferred stock and warrants	540,500	0
Payments of contingent purchase obligations	0	(798)
Issuance of restricted stock units, net of taxes paid	(215)	(177)
Payment of capital lease obligation	(2,415)	(2,939)
Net cash provided by (used in) financing activities	44,818	(31,740)
Net increase (decrease) in cash and cash equivalents	153	(1,831)
Cash and cash equivalents:
Beginning of period	29,513	7,930
End of period	$ 29,666	$ 6,099