Income Taxes (Details 4) (USD $)	12 Months Ended
	Jan. 03, 2015	Dec. 28, 2013
Changes in the balances of gross unrecognized tax benefits
Balance at beginning of period	$ 372,000	$ 3,032,000
Additions for tax positions taken during prior years	127,000	372,000
Additions for tax positions taken during the current year	45,000
Settlements with tax authorities	(9,000)	(3,032,000)
Balance at end of the period	535,000	372,000
Interest accrued on unrecognized tax benefits	185,000
Unrecognized tax benefits before adjustments	720,000
Unrecognized tax benefits offset by future tax deduction	111,000
Interest and penalties on unrecognized tax benefits	85,000	67,000
Unrecognized tax benefits being recognized as a reduction to the effective income tax rate	467,000
Amount of unrecognized tax benefits that is reasonably possible to be reversed within the next twelve months	162,000
Additional disclosures
Undistributed earnings from foreign subsidiaries	$ 3,500,000