CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues	$ 279,574	$ 648,325	$ 667,398
Cost of sales	335,699	467,045	474,403
Gross (loss) profit	(56,125)	181,280	192,995
Selling, general and administrative expenses	62,199	72,535	68,447
Start-up costs	797	811	0
Loss (gain) on disposal or impairment of assets, net	44,111	15,079	(43)
Operating (loss) profit	(163,232)	92,855	124,591
Other (expense) income:
Interest (expense) income, net	(470)	597	777
Foreign currency exchange gain (loss), net	94	(303)	(17)
Other, net	(141)	(278)	(150)
Nonoperating income (expense), total	(517)	16	610
(Loss) income before income taxes	(163,749)	92,871	125,201
Income tax (benefit) expense	(54,205)	37,283	40,315
Net (loss) income	$ (109,544)	$ 55,588	$ 84,886
(Loss) earnings per share:
Basic	$ (4.76)	$ 2.41	$ 3.67
Diluted	$ (4.76)	$ 2.41	$ 3.67