CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating activities
Net loss	$ (44,980)	$ (45,606)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	24,448	27,006
Provision for doubtful accounts	829	201
Deferred income taxes	(23,340)	(23,512)
Lower of cost or market inventory adjustment		4,372
Loss (gain) on disposal or impairment of assets	925	(163)
Foreign currency transaction gain (loss), net	(111)	49
Stock compensation expense	3,399	4,457
Change in fair value of derivative instruments	(3,725)	10,958
Changes in operating assets and liabilities:
Trade accounts and other receivables	26,210	63,418
Inventories	(1,207)	17,647
Prepaid expenses and other current assets	833	(866)
Long-term other assets	144	801
Accounts payable	(2,194)	(5,072)
Accrued expenses	(9,136)	(10,304)
Other long-term liabilities	139
Income tax receivable, net	37,200	16,064
Net cash provided by operating activities	9,434	59,450
Investing activities
Capital expenditures	(6,439)	(36,660)
Net cash used in investing activities	(6,439)	(36,660)
Financing activities
Proceeds from long-term debt		70,000
Repayments on long-term debt	(26,033)
Payments of debt issuance costs	(339)
Proceeds from notes payable, related parties	25,000
Dividends paid		(10,009)
Purchase of common stock	(441)	(549)
Net cash (used in) provided by financing activities	(1,813)	59,442
Effect of exchange rate changes on cash	675	54
Net increase in cash and cash equivalents	1,857	82,286
Cash and cash equivalents at beginning of period	78,866	24,298
Cash and cash equivalents at end of period	80,723	106,584
Supplemental cash flow information
Interest paid	1,824	674
Income taxes paid	$ 0	$ 0