Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Provision for income taxes	$ 1,021,000	$ 417,000	$ 4,984,000	$ 3,037,000
Lapse of the statute of limitations on foreign tax filings
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized tax benefits that could significantly change during the next twelve months	100,000		100,000
Total potential decrease in UTB	100,000		100,000
Maximum | Lapse of the statute of limitations on foreign tax filings
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized tax benefits, associated interest and penalties that could significantly change within the next twelve months	100,000		100,000
U.S. Federal
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Statutory income tax rate			35.00%
Unrecognized tax benefits, Period decrease	4,500,000
State and Local Jurisdiction
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]
Unrecognized tax benefits, Period decrease	$ 200,000