Note 5 - Income Taxes (Details Textual) - USD ($)  | 
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Oct. 02, 2022  | 
Sep. 26, 2021  | 
Oct. 02, 2022  | 
Sep. 26, 2021  | 
|
| Discrete Income Tax Charge, Shortfall from Vesting of Non-vested Stock | $ 5,000 | $ 28,000 | $ 6,000 | $ 72,000 | 
| X | ||||||||||
- Definition Amount of discrete income tax charge to reflect the effect of tax shortfalls arising from the vesting of non-vested stock during the period. No definition available. 
  |