Note 17 - Leases - Maturities of Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Dec. 28, 2019
2020, operating leases	$ 1,856
2020, finance leases	240
2021, operating leases	1,831
2021, finance leases	169
2022, operating leases	1,360
2022, finance leases	22
2023, operating leases	905
2023, finance leases
2024, operating leases	188
2024, finance leases
Thereafter, operating leases
Thereafter, finance leases
Total lease payments, operating leases	6,140
Total lease payments, finance leases	431
Less: imputed interest, operating leases	(368)
Less: imputed interest, finance leases	(7)
Total, operating leases	5,772	$ 6,055
Total, finance leases	$ 424	$ 504