Note 8 - Leases - Details of Right-of-Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Jan. 03, 2021	Dec. 29, 2019
Operating Lease, Right-of-Use Asset	$ 1,134	$ 2,200
Finance leases	705	170
Total	1,839	2,370
Finance leases	670	471
Total	1,882	2,287
Current and Lease Liabilities - Non-current [Member]
Operating Lease, Liability, Total	$ 1,212	$ 1,816