Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Significant Customer and Industry Segment Information (Details Textual)

v3.20.2
Note 12 - Significant Customer and Industry Segment Information (Details Textual)
3 Months Ended 6 Months Ended
Sep. 26, 2020
Sep. 28, 2019
Sep. 28, 2020
Sep. 26, 2020
Sep. 28, 2019
Number of Reportable Segments     2    
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Microsource [Member]          
Number of Major Customers 1 1   1 1
Concentration Risk, Percentage       55.00%  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Microsource [Member] | One Customer [Member]          
Concentration Risk, Percentage 56.00% 57.00%     47.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Microsource [Member] | Second Customer [Member]          
Number of Major Customers   2      
Concentration Risk, Percentage   31.00%      
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Gigatronics Division [Member]          
Number of Major Customers 2     2 2
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Gigatronics Division [Member] | Second Customer [Member]          
Concentration Risk, Percentage 28.00%     28.00% 30.00%