Note 6 - Leases - Maturities of Operating Lease Liabilities (Details) - USD ($)	Sep. 29, 2019	Apr. 01, 2019
2020	$ 724,000
2021	546,000
2022	100,000
2023	10,000
Total undiscounted operating lease payments	1,380,000
Imputed interest	(43,000)
Total operating lease liabilities	$ 1,337,000	$ 1,900,000