Income Taxes (Reconciliation of Income Taxes) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Income Taxes [Abstract]
Income taxes at federal statutory rate	$ 32,316	$ 29,282	$ 41,425
State income taxes, net of federal income tax benefit	1,112	1,436	5,981
Other	(427)	(1,437)	(2,236)
Provision for income taxes	$ 33,001	$ 29,281	$ 45,170
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Percent	35.70%	35.00%	38.20%