CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from continuing operating activities
Net loss	$ (5,986)	$ (14,941)
Adjustments to reconcile net loss to net cash provided by continuing operating activities:
Income from discontinued operations, net of taxes		(824)
Deferred income taxes	(1,242)	(4,937)
Depreciation, depletion and amortization of property, plant and equipment	17,115	10,590
Other	(327)	1,766
Cash provided (used) by changes in assets and liabilities (net of effects of discontinued operations):
Accounts receivable	(7,276)	3,436
Inventories	4,857	3,562
Prepaid insurance	3,026	2,405
Prepaid and accrued income taxes	115	858
Accounts payable	6,895	15,273
Accrued interest	(7,979)	(8,078)
Other assets and other liabilities	(1,411)	2,547
Net cash provided by continuing operating activities	7,787	11,657
Cash flows from continuing investing activities
Expenditures for property, plant and equipment	(13,894)	(104,137)
Other investing activities	502	(37)
Net cash used by continuing investing activities	(13,392)	(104,174)
Cash flows from continuing financing activities
Proceeds from revolving debt facility		25,000
Payments on revolving debt facility		(25,000)
Proceeds from other long-term debt, net of fees		9,951
Payments on other long-term debt	(4,225)	(2,313)
Payments of debt issuance costs	(90)	(476)
Payments of issuance costs relating to preferred stocks and warrants		(785)
Payments on short-term financing	(3,717)	(2,520)
Other financing activities	(66)	49
Net cash provided (used) by continuing financing activities	(8,098)	3,906
Cash flows of discontinued operations:
Net cash provided (used) by operating activities	(1,212)	2,276
Net cash used by investing activities		(625)
Net cash used by financing activities	(65)	(901)
Net cash provided (used) by discontinued operations	(1,277)	750
Net decrease in cash and cash equivalents	(14,980)	(87,861)
Cash and cash equivalents at beginning of period	60,017	127,195
Cash and cash equivalents at end of period	$ 45,037	$ 39,334