Note 18 - Commitments (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 30, 2018
Operating Lease, Impairment Loss	$ 2,231
Operating Lease, Right-of-Use Asset	2,409	5,820
Operating Lease, Liability, Total	4,527	$ 6,055
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset			$ 3,900
Operating Lease, Liability, Total			$ 4,100
COVID-19 [Member]
Operating Lease, Impairment Loss	1,900
Write off Lease Cost and Obsolete Equipment	$ 300