Note A - Summary of Significant Accounting Policies - Schedule of Contract Liabilities From Contract With Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2022	Jan. 02, 2021
Contract liabilities at beginning of period	$ 15,952	$ 13,852
Increase due to deferral of revenue at period end	19,635	15,952
Decrease due to beginning contract liabilities recognized as revenue	(15,952)	(13,852)
Contract liabilities at end of period	$ 19,635	$ 15,952