Income Taxes (Schedule of Components of Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 30, 2017	Dec. 31, 2016
Income Taxes [Abstract]
Current Federal Income Tax Expense (Benefit)	$ 11,385	$ 10,630	$ 25,908
Current State Income Tax Expense (Benefit)	4,594	1,972	5,888
Deferred Federal Income Tax Expense (Benefit)	6,059	(34,659)	6,020
Deferred State Income Tax Expense (Benefit)	(2,640)	2,666	(317)
Provision for income taxes	$ 19,398	$ (19,391)	$ 37,499