Note 6 - Leases (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2022	Apr. 04, 2021	Jan. 02, 2022
Operating and Finance Lease, Right of Use Asset	$ 1,336		$ 1,529
Operating and Finance Lease Liability	1,377		1,563
Operating Lease, Expense	100	$ 100
Right of Use Asset Obtained in Exchange for Finance and Operating Lease Liability	0	$ 0
Approximate [Member]
Operating and Finance Lease, Right of Use Asset	1,300		1,500
Operating and Finance Lease Liability	$ 1,400		$ 1,600
Minimum [Member]
Lessee, Operating Lease, Term of Contract (Year)	1 year
Lessee, Finance Lease, Term of Contract (Year)	2 years
Maximum [Member]
Lessee, Operating Lease, Term of Contract (Year)	5 years
Lessee, Finance Lease, Term of Contract (Year)	3 years