Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net loss	$ (53,542)	$ (25,778)
Adjustments to reconcile net loss to net cash provided by operating activities
Depreciation and amortization	33,338	33,838
Asset impairment	16,619	9,839
Stock-based compensation	1,554	1,385
(Gain) loss on disposition of assets, net	(1,208)	3,503
Deferred income taxes	(84)	590
Amortization of deferred financing costs	709	610
Bad debt expense (recovery)	16	(42)
Changes in operating assets and liabilities
Accounts receivable	26,985	9,265
Inventories	(7)	(586)
Prepaid expenses and other assets	660	3,330
Accounts payable and accrued liabilities	(17,948)	(8,786)
Net cash provided by operating activities	7,092	27,168
Cash flows from investing activities
Purchases of property, plant and equipment	(12,688)	(34,974)
Proceeds from the sale of assets	2,445	7,806
Proceeds from insurance claims	0	1,000
Collection of principal on note receivable	145	0
Net cash used in investing activities	(10,098)	(26,168)
Cash flows from financing activities
Borrowings under PPP Loan	10,000	0
Proceeds from issuance of common stock	10,978	0
Common stock issuance costs	(721)	(177)
Purchase of treasury stock	(66)	(328)
RSUs withheld for taxes	(79)	0
Payments for finance lease obligations	(3,499)	(1,003)
Net cash provided by (used in) financing activities	16,613	(4,101)
Net increase (decrease) in cash and cash equivalents	13,607	(3,101)
Cash and cash equivalents
Beginning of period	5,206	12,247
End of period	18,813	9,146
Supplemental disclosure of cash flow information
Cash paid during the period for interest	10,275	10,496
Supplemental disclosure of non-cash investing and financing activities
Change in property, plant and equipment purchases in accounts payable	(7,488)	(1,320)
Additions to property, plant and equipment through finance leases	3,326	2,181
Extinguishment of finance lease obligations from sale of assets classified as finance leases	(1,504)	(141)
Transfer of assets from held and used to held for sale	0	(5,327)
Transfer from inventory to fixed assets	0	(357)
Revolving Credit Facility
Cash flows from financing activities
Borrowings under Revolving Credit Facility	11,038	2,511
Repayments under Revolving Credit Facility	(11,038)	(5,077)
Financing costs paid	0	(22)
Term Loan Facility
Cash flows from financing activities
Financing costs paid	$ 0	$ (5)