Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Cash Flows [Abstract]
Net loss	$ (23,044)	$ (6,355)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	7,989	9,135
Amortization of debt issuance costs, net	41	206
Stock-based compensation	290	852
Impairment of long-lived assets	15,579	117
Gain on disposal of property, plant and equipment	(100)	(858)
Bad debt recoveries	0	(141)
Change in fair value of derivative warrant liability	0	41
Deferred income taxes	0	70
Other, net	246	29
Changes in operating assets and liabilities:
Accounts receivable	3,790	2,944
Prepaid expenses and other receivables	199	(1,104)
Accounts payable and accrued liabilities	2,139	(6,735)
Other assets and liabilities, net	284	1,294
Net cash provided by (used in) operating activities	7,413	(505)
Cash flows from investing activities:
Proceeds from the sale of property, plant and equipment	176	3,665
Purchases of property, plant and equipment	(1,413)	(3,626)
Net cash (used in) provided by investing activities	(1,237)	39
Cash flows from financing activities:
Payments on First and Second Lien Term Loans	(823)	(1,102)
Proceeds from Revolving Facility	43,281	51,037
Payments on Revolving Facility	(43,281)	(51,037)
Payments on Bridge Term Loan	0	(31,382)
Proceeds from the issuance of stock	0	31,057
Payments on finance leases and other financing activities	(596)	(787)
Net cash used in financing activities	(1,419)	(2,214)
Change in cash, cash equivalents and restricted cash	4,757	(2,680)
Cash and cash equivalents, beginning of period	4,788	7,302
Restricted cash, beginning of period	922	656
Cash, cash equivalents and restricted cash, beginning of period	5,710	7,958
Cash and cash equivalents, end of period	9,888	3,949
Restricted cash, end of period	579	1,329
Cash, cash equivalents and restricted cash, end of period	10,467	5,278
Supplemental disclosure of cash flow information:
Cash paid for interest	848	1,205
Cash paid for taxes, net	40	0
Property, plant and equipment purchases in accounts payable	1,020	0
Common stock issued to settle Bridge Term Loan	$ 0	$ 1,118