CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenues	$ 73,252	$ 176,561	$ 146,999	$ 325,125
Cost of sales	83,554	122,913	183,299	227,113
Gross (loss) profit	(10,302)	53,648	(36,300)	98,012
Selling, general and administrative and other operating expenses	14,615	18,728	31,129	35,681
Start-up costs		811		811
Operating (loss) profit	(24,917)	34,109	(67,429)	61,520
Other (expense) income, net	(4)	200	(136)	292
(Loss) income before income taxes	(24,921)	34,309	(67,565)	61,812
Income tax (benefit) expense	(7,917)	11,292	(21,959)	20,368
Net (loss) income	$ (17,004)	$ 23,017	$ (45,606)	$ 41,444
(Loss) earnings per share:
Basic	$ (0.74)	$ 1.00	$ (1.98)	$ 1.79
Diluted	$ (0.74)	$ 1.00	(1.98)	1.79
Other information:
Dividends declared per common share (See Note 4)			$ 0.43	$ 0.60