Income Taxes (Details) - USD ($) $ in Thousands	Dec. 29, 2015	Dec. 30, 2014	Dec. 31, 2013	Dec. 25, 2012
Operating Loss Carryforwards [Line Items]
Unrecognized tax benefits, net of tax	$ 2,600
Liability for uncertain tax positions	2,685	$ 2,795	$ 3,977	$ 4,607
Liabilities for interest and penalties	100
Net impact of unrecognized tax benefit	100
US general business credit carryforwards	18,915	$ 16,236
U.S.
Operating Loss Carryforwards [Line Items]
US general business credit carryforwards	$ 18,900