Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 26, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (6,342)
Other comprehensive income (loss)	(2,783)
Amounts reclassified from other comprehensive income (loss)	330	[1]
Ending Balance	(8,795)
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	1,353
Other comprehensive income (loss)	(2,902)
Ending Balance	(1,549)
Pension liability
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(7,695)
Other comprehensive income (loss)	119
Amounts reclassified from other comprehensive income (loss)	330	[1]
Ending Balance	$ (7,246)

[1] The amounts reclassified from other comprehensive income (loss) were included in selling, general and administrative expenses in the consolidated statement of operations.