Commitments and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended		22 Months Ended
	Sep. 25, 2016	Sep. 27, 2015	Sep. 25, 2016	Dec. 27, 2015	Dec. 28, 2014	Dec. 28, 2014	Oct. 14, 2014
Other Commitments [Line Items]
Property, plant and equipment, net	$ 227,586		$ 227,586	$ 234,646
Restricted Stock, Grants in Period	343,428
Common Shares Purchased and Retired Under Repurchase Program, Total						1,510,759
Payments for Repurchase of Common Stock		$ 14,374	$ 13,527	$ 19,600	$ 21,800	$ 30,000
Stock Repurchased and Retired During Period, Shares			585,970	1,056,954	1,089,560
Payments to Acquire Property, Plant, and Equipment		$ 32,629	$ 30,165
Maximum Length of Time, Foreign Currency Cash Flow Hedge			39 months
2014 Program [Member]
Other Commitments [Line Items]
Stock Repurchase Program, Authorized Amount							$ 30,000
Performance Shares [Member]
Other Commitments [Line Items]
Restricted Stock, Grants in Period			42,946	80,044