Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Additional Income Taxes (Textual) [Abstract]
United States statutory federal income tax rate		21.00%
Deferred Tax Assets, Valuation Allowance	$ (116,419,000)	$ (125,520,000)	$ (108,700,000)
Increase (decrease) in valuation allowance on deferred tax assets	(9,100,000)	16,800,000	13,200,000
Reasonably possible decrease in unrecognized tax benefits	10,500,000
Intercompany transfers of intangible property rights	0	(575,618,000)	0
Change in deferred tax asset valuation allowance	(9,101,000)	$ 16,796,000	$ 13,234,000
CALIFORNIA
Additional Income Taxes (Textual) [Abstract]
Change in deferred tax asset valuation allowance	$ 22,200,000