Income Taxes (Valuation Allowance for Deferred Tax Asset) (Details) - Valuation Allowance of Deferred Tax Assets - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 11,524	$ 10,260	$ 7,153	$ 8,664
Charged to expenses	1,264	98	(839)
Adjustments to balance sheet	0	(3,009)	672
Balance at end of period	$ 11,524	$ 10,260	$ 7,153