CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net loss	$ (80,129)	$ (100,784)	$ (137,294)	$ (81,559)
Other comprehensive income (loss):
Change in pension and postretirement obligations, net of tax of $(5) and $(11) in 2015 and $13 and $26 in 2014	(10)	24	(21)	49
Total Other Comprehensive Income (Loss), Net of Tax	(10)	24	(21)	49
Comprehensive loss	$ (80,139)	$ (100,760)	$ (137,315)	$ (81,510)