Income Taxes (Provision for Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Income Taxes [Abstract]
Current Federal Income Tax Expense (Benefit)	$ 29,888	$ 24,809	$ 26,994
Current State Income Tax Expense (Benefit)	3,325	1,237	6,774
Deferred Federal Income Tax Expense (Benefit)	(188)	2,559	8,973
Deferred State Income Tax Expense (Benefit)	(24)	676	2,429
Provision for income taxes	$ 33,001	$ 29,281	$ 45,170