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SEGMENT INFORMATION - Schedule of Depreciation and amortization (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 31, 2026
Jan. 31, 2025
Jan. 31, 2026
Jan. 31, 2025
Depreciation and amortization:        
Depreciation and amortization $ 512 $ 458 $ 1,414 $ 1,469
Frequency Electronics Inc New York [Member]        
Depreciation and amortization:        
Depreciation and amortization 498 430 1,350 1,385
Frequency Electronics Inc Zyfer [Member]        
Depreciation and amortization:        
Depreciation and amortization $ 14 $ 28 $ 64 $ 84