Income Taxes (Details 4) (USD $)	12 Months Ended
	Dec. 28, 2014	Dec. 29, 2013
Income Taxes
Balance at the beginning of the period	$ 2,661,000	$ 3,430,000
Additions for tax positions of prior years	1,167,000	170,000
Reductions for lapse of statute of limitations	(1,015,000)	(241,000)
Settlements		(698,000)
Balance at the end of the period	2,813,000	2,661,000
Interest expense (benefits) included in income tax expense	(35,000)	(140,000)
Income tax expense, accrued interest and penalties	$ 674,000	$ 707,000