Income Taxes Income tax (benefit) expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Income Tax Disclosure [Abstract]
Tax benefits included in unrecognized tax benefit	$ 385
Net loss carryforward state tax credits	600
Valuation Allowance, Amount	21,875	$ 22,929
Currently payable:
Federal	1,789	1,754	$ (1,125)
State	529	(316)	31
Foreign	544	368	296
Current taxes payable	2,862	1,806	(798)
Deferred:
Federal	1,784	672	1,200
State	542	117	511
Foreign	(119)	179	1,143
Deferred taxes (benefit)	2,207	968	2,854
Income Tax Expense (Benefit)	5,069	$ 2,774	$ 2,056
State income tax net loss carryforwards	11,600
Foreign net loss carryforwards	$ 2,900