Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Stock-based Compensation - Stock Option Compensation (Details)

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Note 7 - Stock-based Compensation - Stock Option Compensation (Details) - USD ($)
3 Months Ended 9 Months Ended
Dec. 29, 2019
Dec. 30, 2018
Dec. 29, 2019
Dec. 30, 2018
Allocated share-based compensation $ 79,000 $ 84,000 $ 219,000 $ 281,000
Share-based Payment Arrangement, Option [Member]        
Allocated share-based compensation 11,000 16,000 31,000 57,000
Share-based Payment Arrangement, Option [Member] | Cost of Sales [Member]        
Allocated share-based compensation 4,000 6,000 17,000 25,000
Share-based Payment Arrangement, Option [Member] | Marketing and Administrative Expenses [Member]        
Allocated share-based compensation 7,000 10,000 14,000 32,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2018 [Member]        
Allocated share-based compensation 10,000 6,000 33,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2018 [Member] | Cost of Sales [Member]        
Allocated share-based compensation 4,000 5,000 14,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2018 [Member] | Marketing and Administrative Expenses [Member]        
Allocated share-based compensation 6,000 1,000 19,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2017 [Member]        
Allocated share-based compensation     11,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2017 [Member] | Cost of Sales [Member]        
Allocated share-based compensation     6,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2017 [Member] | Marketing and Administrative Expenses [Member]        
Allocated share-based compensation     5,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2019 [Member]        
Allocated share-based compensation 6,000 6,000 13,000 13,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2019 [Member] | Cost of Sales [Member]        
Allocated share-based compensation 2,000 2,000 7,000 5,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2019 [Member] | Marketing and Administrative Expenses [Member]        
Allocated share-based compensation 4,000 4,000 6,000 8,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2020 [Member]        
Allocated share-based compensation 5,000 12,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2020 [Member] | Cost of Sales [Member]        
Allocated share-based compensation 2,000 5,000
Share-based Payment Arrangement, Option [Member] | Fiscal Year 2020 [Member] | Marketing and Administrative Expenses [Member]        
Allocated share-based compensation $ 3,000 $ 7,000