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Income Taxes - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Income Tax Disclosure [Abstract]
Provision for Income Taxes at Statutory Rate	$ 17,279	$ 14,531	$ 11,559
Increases (Decreases) Resulting From:
State income taxes, net of federal tax	506	694	304
U.S. tax cost (benefit) of foreign earnings	455	206	(119)
Foreign tax rate differential	(3,852)	(3,026)	(2,681)
Provision for (reversal of) tax benefit reserves, net	33	(1,017)	853
Change in valuation allowance	99	125	(968)
Nondeductible expenses	704	1,398	1,580
Research and development tax credits	(210)	(274)	(638)
Other	(252)	(190)	(574)
Continuing Operations	$ 14,762	$ 12,447	$ 9,316

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The portion of the difference, between total income tax expense or benefit as reported in the foreign income for the period and the expected domestic income tax expense or benefit for foreign earnings.

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Increase (Decrease) In Effective Income Tax Rate Reconciliation, Amount [Abstract]

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