Annual report pursuant to Section 13 and 15(d)

Note 13 - Major Customers - Summary of Major Customers (Details)

v3.21.1
Note 13 - Major Customers - Summary of Major Customers (Details) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]
12 Months Ended
Mar. 28, 2021
Mar. 29, 2020
Wal-Mart Stores, Inc. [Member]    
Sales, percent 43.00% 42.00%
Amazon.com, Inc. [Member]    
Sales, percent 25.00% 20.00%