Note 2 - Advertising Costs (Details Textual) - USD ($)  | 
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Oct. 02, 2022  | 
Sep. 26, 2021  | 
Oct. 02, 2022  | 
Sep. 26, 2021  | 
|
| Advertising Expense | $ 123,000 | $ 129,000 | $ 247,000 | $ 350,000 | 
| X | ||||||||||
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
  |