Stockholders' Equity Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Equity [Abstract]
Net loss	$ (10,622)	$ (4,300)
Foreign currency translation gain	33	3,333
Pension cost amortization, net of tax	345	(109)
Total comprehensive loss	$ (10,244)	$ (1,076)