CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Operating activities
Net loss	$ (24,684)	$ (28,602)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization	12,291	12,994
Provision for doubtful accounts	424	91
Deferred income taxes	(11,897)	(14,043)
Lower of cost or market inventory adjustment		4,372
Loss (gain) on disposal or impairment of assets	948	(32)
Foreign currency transaction gain (loss), net	(129)	48
Stock compensation expense	1,564	2,242
Change in fair value of derivative instruments	(784)	12,547
Changes in operating assets and liabilities:
Trade accounts and other receivables	23,339	63,785
Inventories	(5,937)	1,871
Prepaid expenses and other current assets	169	711
Long-term other expenses	(4)	78
Accounts payable	(439)	(6,778)
Accrued expenses	(2,879)	(11,648)
Income tax receivable, net	(277)	15,479
Net cash (used in) provided by operating activities	(8,295)	53,115
Investing activities
Capital expenditures	(6,088)	(22,887)
Net cash used in investing activities	(6,088)	(22,887)
Financing activities
Proceeds from bank borrowings		50,000
Repayments on bank borrowings	(23,000)
Dividends paid		(7,682)
Purchase of common stock	(418)	(549)
Net cash (used in) provided by financing activities	(23,418)	41,769
Effect of exchange rate changes on cash	397	(152)
Net (decrease) increase in cash and cash equivalents	(37,404)	71,845
Cash and cash equivalents at beginning of period	78,866	24,298
Cash and cash equivalents at end of period	41,462	96,143
Supplemental cash flow information
Interest paid	966	164
Income taxes paid	$ 0	$ 0