Annual report pursuant to Section 13 and 15(d)

Note 13 - Income Taxes (Details Textual)

v3.21.2
Note 13 - Income Taxes (Details Textual) - USD ($)
 12 Months Ended
Mar. 27, 2021
Mar. 28, 2020
Mar. 30, 2019
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00% 21.00%  
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount $ (9,530,000)    
Unrecognized Tax Benefits, Ending Balance 52,000 $ 132,000 $ 123,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total 0    
Domestic Tax Authority [Member]      
Operating Loss Carryforwards, Total 9,716,000    
Operating Loss Carryforwards, 382 Limitations 38,345,000    
Operating Loss Carryforwards, Not Subject to Expiration 1,765,000    
Operating Loss Carryforwards, 383 Limitations $ 394,500    
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]      
Open Tax Year 2018 2019 2020    
State and Local Jurisdiction [Member]      
Operating Loss Carryforwards, Total $ 4,721,000    
Operating Loss Carryforwards, 382 Limitations $ 19,612,000    
State and Local Jurisdiction [Member] | California Franchise Tax Board [Member]      
Open Tax Year 2017 2018 2019 2020