Quarterly report pursuant to Section 13 or 15(d)

Note 11 - Significant Customer and Industry Segment Information (Details Textual)

v3.22.0.1
Note 11 - Significant Customer and Industry Segment Information (Details Textual)
3 Months Ended 6 Months Ended 9 Months Ended
Dec. 25, 2021
Dec. 26, 2020
Sep. 25, 2021
Sep. 26, 2020
Dec. 25, 2021
Dec. 26, 2020
Number of Reportable Segments     2      
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Three Customers [Member]            
Concentration Risk, Percentage   95.00%       89.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Microsource [Member] | One Customer [Member]            
Number of Major Customers 1       1  
Concentration Risk, Percentage 79.00% 54.00%   55.00% 80.00%  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Microsource [Member] | Customer Two [Member]            
Concentration Risk, Percentage 11.00% 25.00%        
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Gigatronics Division [Member] | Customer Three [Member]            
Concentration Risk, Percentage   16.00%        
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Microsource segment and the Giga-tronics Division [Member] | Customer Two and Three [Member]            
Concentration Risk, Percentage           34.00%