CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 89,661	$ (98,900)	$ 8,102	$ (140,721)
Other comprehensive income:
Change in pension and postretirement obligations, net of tax of $14 and $40 in 2014 and $10 and $30 in 2013	25	18	74	56
Total Other Comprehensive Income (Loss), Net of Tax	25	18	74	56
Comprehensive income (loss)	$ 89,686	$ (98,882)	$ 8,176	$ (140,665)