Quarterly report pursuant to Section 13 or 15(d)

Note 13 - Income Taxes (Details Textual)

v3.20.2
Note 13 - Income Taxes (Details Textual) - USD ($)
xbrli-pure in Thousands
3 Months Ended 6 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 26, 2020
Sep. 28, 2019
Income Tax Expense (Benefit), Total $ 2,000 $ 2,000 $ 2,000 $ 2,000
Effective Income Tax Rate Reconciliation, Percent, Total     0.00% 0.00%
Unrecognized Tax Benefits, Ending Balance 132,000   $ 132,000  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total $ 0   $ 0