| Note 3 - Financing Arrangements | 12 Months Ended | 
|---|---|
| Mar. 29, 2020 | |
| Notes to Financial Statements | |
| Debt Disclosure [Text Block] | Note  3  - Financing Arrangements Factoring Agreement s : To reduce its exposure to credit losses, The Company assigns the majority of its trade accounts receivable to CIT pursuant to factoring agreements, which have expiration dates that are coterminous with that of the financing agreement described below. Under the terms of the factoring agreements, CIT remits customer payments to the Company as such payments are received by CIT. CIT bears credit losses with respect to assigned accounts receivable from approved shipments, while the Company bears the responsibility for adjustments from customers related to returns, allowances, claims and discounts. CIT   may at any time terminate or limit its approval of shipments to a particular customer. If such a termination or limitation occurs, the Company either assumes (and  may seek to mitigate) the credit risk for shipments to the customer after the date of such termination or limitation or discontinues shipments to the customer. Factoring fees, which are included in marketing and administrative expenses in the accompanying consolidated statements of income, were $255,000and $261,000during fiscal years 2020and 2019,respectively. There were noadvances on the factoring agreements at  March 29, 2020 or  March 31, 2019. Credit Facility:  March 29, 2020 consisted of a revolving line of credit under a financing agreement with CIT of up to $26.0million, which includes a $1.5million sub-limit for letters of credit, bearing interest at the rate of prime minus 0.5%or LIBOR plus 1.75%.The financing agreement matures on  July 11, 2022 and is secured by a firstlien on all assets of the Company. At  March 29, 2020, the Company had elected to pay interest on balances owed under the revolving line of credit under the LIBOR option, which was 3.27%as of  March 29, 2020. The financing agreement also provides for the payment by CIT to the Company of interest at the rate of prime as of the beginning of the calendar month minus 2.0%,which was 2.75%as of  March 29, 2020, on daily negative balances, if any, held by CIT. As of   March 29, 2020, there was a balance of $2.6million owed on the revolving line of credit, there was noletter of credit outstanding and $20.1million was available under the revolving line of credit based on the Company’s eligible accounts receivable and inventory balances. As of  March 31, 2019, there was a balance of $4.5million owed on the revolving line of credit, there was noletter of credit outstanding and $19.4million was available under the revolving line of credit based on the Company’s eligible accounts receivable and inventory balances. The financing agreement contains usual and customary covenants for agreements of that type, including limitations on other indebtedness, liens, transfers of assets, investments and acquisitions, merger or consolidation transactions, transactions with affiliates, and changes in or amendments to the organizational documents for the Company and its subsidiaries. The Company believes it was in compliance with these covenants as of   March 29, 2020. |