Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Reconciliation of income taxes computed by applying the federal statutory income tax rate
Provision for income taxes at United States federal statutory rate of 35%	$ (5,924)	$ (111)	$ 6,904
State and local income taxes, net of federal income tax effect	204	402	1,631
Taxes on foreign income which differ from the United States statutory rate	1,383	1,290	(339)
Non-deductible equity compensation expense	3,244	1,767	1,227
Tax effect of other permanent items	(147)	(860)	56
Unrecognized tax benefits activity	(249)	5	29
Change in valuation allowance	510	160	660
Foreign tax credits	(573)
Other	(279)	449	(471)
Income tax (benefit) expense	$ (1,831)	$ 3,102	$ 9,697