Summary of Accrual Activities by Components Related to Company's Restructuring Charges (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2016	Apr. 03, 2015
Restructuring Cost And Reserve [Line Items]
Accrued expense beginning balance	$ 1,882
Restructuring charges	2,712	$ 1,753
Cash payments	(1,330)
Non-cash write-offs and other adjustments	(604)
Accrued expense ending balance	2,660
Severance
Restructuring Cost And Reserve [Line Items]
Accrued expense beginning balance	1,358
Restructuring charges	1,585
Cash payments	(975)
Accrued expense ending balance	1,968
Facility Closing
Restructuring Cost And Reserve [Line Items]
Accrued expense beginning balance	406
Restructuring charges	115
Cash payments	(28)
Accrued expense ending balance	493
Depreciation
Restructuring Cost And Reserve [Line Items]
Restructuring charges	602
Non-cash write-offs and other adjustments	(602)
Other Restructuring Charges
Restructuring Cost And Reserve [Line Items]
Accrued expense beginning balance	118
Restructuring charges	410
Cash payments	(327)
Non-cash write-offs and other adjustments	(2)
Accrued expense ending balance	$ 199