Stockholders' Equity Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Stockholders' Equity Note [Abstract]
Net loss	$ (26,300)	$ (7,325)	$ (105,926)	$ (95,621)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss), before Reclassification and Tax	(2,941)	(2,064)	(7,633)	(1,438)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax	670	254	3,529	761
Total comprehensive loss	$ (28,571)	$ (9,135)	$ (110,030)	$ (96,298)