Stockholders' Equity - Accumulated Other Comprehensive Loss (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013	Dec. 29, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total accumulated other comprehensive loss	$ (900,000)	$ (700,000)	$ (900,000)	$ (700,000)	$ (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	(400,000)	(200,000)	(400,000)	(200,000)
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)