Consolidated Statements of Changes in Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Translation Adjustment	Accumulated Defined Benefit Plans Adjustment
Stockholders' equity at Dec. 31, 2010	$ 9,831	$ 182	$ 715,790	$ (719,370)	$ 17,636	$ (4,407)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(62,717)	0	0	(62,717)	0	0
Net other comprehensive income (loss)	(3,457)	0	0	0	2,380	(5,837)
Issuance of shares pursuant to share-based payment plans	0	(3)	(3)	0	0	0
Share-based compensation	3,050	0	3,050	0	0	0
Stockholders' equity at Dec. 30, 2011	(53,293)	185	718,837	(782,087)	20,016	(10,244)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(36,768)	0	0	(36,768)	0	0
Net other comprehensive income (loss)	1,033	0	0	0	80	953
Issuance of shares pursuant to share-based payment plans	0	(4)	(4)	0	0	0
Share-based compensation	3,036	0	3,036	0	0	0
Stockholders' equity at Dec. 31, 2012	(85,992)	189	721,869	(818,855)	20,096	(9,291)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(24,895)	0	0	(24,895)	0	0
Net other comprehensive income (loss)	116	0	0	0	(815)	931
Issuance of shares pursuant to share-based payment plans	0	(6)	(6)	0	0	0
Share-based compensation	2,208	0	2,208	0	0	0
Stockholders' equity at Dec. 31, 2013	$ (108,563)	$ 195	$ 724,071	$ (843,750)	$ 19,281	$ (8,360)