Stockholders' Equity - Accumulated Other Comprehensive Loss (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013	Dec. 29, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	$ (1,000,000)	$ (800,000)	$ (1,000,000)	$ (800,000)	$ (800,000)
Reclassifications from other comprehensive income	0	0	0	0
Cumulative translation adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	(500,000)	(300,000)	(500,000)	(300,000)
Post retirement benefit reserve adjustment net of tax expense
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	$ (500,000)	$ (500,000)	$ (500,000)	$ (500,000)