CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Revenues	$ 73,747us-gaap_SalesRevenueNet	$ 148,564us-gaap_SalesRevenueNet
Cost of sales	99,745us-gaap_CostOfGoodsAndServicesSold	104,200us-gaap_CostOfGoodsAndServicesSold
Gross (loss) profit	(25,998)us-gaap_GrossProfit	44,364us-gaap_GrossProfit
Selling, general, and administrative expenses, and other operating expenses	16,515us-gaap_OperatingExpenses	16,953us-gaap_OperatingExpenses
Operating (loss) profit	(42,513)us-gaap_OperatingIncomeLoss	27,411us-gaap_OperatingIncomeLoss
Other (expense) income, net	(131)us-gaap_NonoperatingIncomeExpense	92us-gaap_NonoperatingIncomeExpense
(Loss) income before income taxes	(42,644)	27,503
Income tax (benefit) expense	(14,042)us-gaap_IncomeTaxExpenseBenefit	9,076us-gaap_IncomeTaxExpenseBenefit
Net (loss) income	$ (28,602)us-gaap_NetIncomeLoss	$ 18,427us-gaap_NetIncomeLoss
(Loss) earnings per share:
Basic	$ (1.24)us-gaap_EarningsPerShareBasic	$ 0.80us-gaap_EarningsPerShareBasic
Diluted	$ (1.24)us-gaap_EarningsPerShareDiluted	$ 0.80us-gaap_EarningsPerShareDiluted
Other information:
Dividends declared per common share (See Note 4)	$ 0.43	$ 0.60

Aggregate dividends declared during the period for each share of common stock outstanding.

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