Note 5 - Paycheck Protection Program (the "PPP") Under the Cares Act (Details Textual) - USD ($)		9 Months Ended
Apr. 23, 2020	Dec. 26, 2020	Dec. 28, 2019
Proceeds from Issuance of Long-term Debt, Total		$ 1,941,000	$ 1,051,000
Paycheck Protection Program CARES Act [Member]
Proceeds from Issuance of Long-term Debt, Total	$ 786,200

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration