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Debt prepayment costs

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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RECENTLY ADOPTED ACCOUNTING STANDARDS IMPACTS OF ADOPTING ASC 606 AND ASU 2016-18 ON THE CONSOLIDATED STATEMENT OF CASH FLOWS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net loss	$ 7,634	$ 3,350	$ (958)	$ 1,757	$ (1,636)	$ (1,445)	$ (5,819)	$ (13,667)	$ 11,783	$ (22,567)	$ (64,183)
Lower of cost or net realizable value inventory adjustments	930	$ 0	$ 76	705	1,571	$ 666	$ 317	3,825	1,711	6,379	20,374
Changes in certain assets and liabilities										(9,603)	(18,776)
Net cash provided by (used in) operating activities									64,237	16,693	(14,741)
Debt prepayment costs								(3,001)	(402)	(3,001)	0
Net cash used in financing activities								(15,760)	(15,301)	(15,760)	(19,083)
Net (decrease) increase in cash, cash equivalents and restricted cash									32,155	(6,921)	(1,314)
Cash, Cash Equivalents, and Restricted Cash, beginning of period				1,549				8,470	1,549	8,470	9,784
Cash, Cash Equivalents, and Restricted Cash, end of period	$ 33,704				1,549				33,704	1,549	8,470
Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net loss										(22,910)	(66,633)
Lower of cost or net realizable value inventory adjustments										7,324
Changes in certain assets and liabilities										(9,681)	(19,856)
Net cash provided by (used in) operating activities										17,217	(18,271)
Debt prepayment costs										0
Net cash used in financing activities										(12,759)
Net (decrease) increase in cash, cash equivalents and restricted cash										(3,396)	(4,844)
Cash, Cash Equivalents, and Restricted Cash, beginning of period				1,068				4,464	1,068	4,464	9,308
Cash, Cash Equivalents, and Restricted Cash, end of period					1,068					1,068	4,464
Accounting Standards Update 2014-09 [Member] \| Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net loss										343	2,450
Lower of cost or net realizable value inventory adjustments										(945)
Changes in certain assets and liabilities										602	(2,450)
Net cash provided by (used in) operating activities										0	0
Debt prepayment costs										0
Net cash used in financing activities										0
Net (decrease) increase in cash, cash equivalents and restricted cash										0	0
Cash, Cash Equivalents, and Restricted Cash, beginning of period				0				0	0	0	0
Cash, Cash Equivalents, and Restricted Cash, end of period					0					0	0
Accounting Standards Update 2016-15 [Member] \| Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net loss										0	0
Lower of cost or net realizable value inventory adjustments										0
Changes in certain assets and liabilities										(3,001)	0
Net cash provided by (used in) operating activities										3,001	0
Debt prepayment costs										(3,001)
Net cash used in financing activities										(3,001)
Net (decrease) increase in cash, cash equivalents and restricted cash										0	0
Cash, Cash Equivalents, and Restricted Cash, beginning of period				0				0	0	0	0
Cash, Cash Equivalents, and Restricted Cash, end of period					0					0	0
Accounting Standards Update 2016-18 [Member] \| Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net loss										0	0
Lower of cost or net realizable value inventory adjustments										0
Changes in certain assets and liabilities										(3,525)	3,530
Net cash provided by (used in) operating activities										(3,525)	3,530
Debt prepayment costs										0
Net cash used in financing activities										0
Net (decrease) increase in cash, cash equivalents and restricted cash										3,525	3,530
Cash, Cash Equivalents, and Restricted Cash, beginning of period				$ 481				$ 4,006	$ 481	4,006	476
Cash, Cash Equivalents, and Restricted Cash, end of period					$ 481					$ 481	$ 4,006