Income Taxes (Schedule Of Components Of Income Tax Expense (Benefit) From Continuing Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2016	Dec. 29, 2015	Dec. 30, 2014
Current tax expense (benefit):
Federal	$ 2,768	$ 894	$ 3,689
State	2,465	1,117	3,381
Total current tax expense	5,233	2,011	7,070
Deferred tax expense (benefit):
Federal	1,381	1,722	932
State	194	1,774	(279)
Total deferred tax expense (benefit)	1,575	3,496	653
Total income tax expense	$ 6,808	$ 5,507	$ 7,723