Annual report pursuant to Section 13 and 15(d)

Note 11 - Major Customers - Summary of Major Customers (Details)

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Note 11 - Major Customers - Summary of Major Customers (Details) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]
12 Months Ended
Mar. 29, 2020
Mar. 31, 2019
Wal-Mart Stores, Inc. [Member]    
Sales, percent 42.00% 41.00%
Amazon.com, Inc. [Member]    
Sales, percent 20.00% 16.00%
Target Corporation [Member]    
Sales, percent [1] 10.00%
[1] Amount represented less than 10% of the Company's gross sales for this fiscal year.