Consolidated Statements of Comprehensive Operations (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 30, 2011
Net loss	$ (24,895)	$ (36,768)	$ (62,717)
Foreign currency translation adjustment	(815)	80	2,380
Pension liability adjustments, net of tax	931	953	(5,837)
Total other comprehensive income (loss)	116	1,033	(3,457)
Total comprehensive loss	$ (24,779)	$ (35,735)	$ (66,174)