Income Taxes (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Income Tax Reconciliation:
Income taxes computed at U.S. statutory rate	$ (8,247)	$ 1,616	$ 15,604
State income taxes	(324)	(116)	636
Foreign tax rate differential	9	(275)	907
Change in valuation allowance	0	0	17
Domestic production activities deduction	0	(17)	(1,033)
Tax credits	(1,377)	0	(601)
Benefit of tax elections	0	(1,309)	0
Liabilities for uncertain tax positions	111	66	153
Other, net	409	189	216
Provision (benefit) for income taxes	$ (9,419)	$ 154	$ 15,899