SEGMENT INFORMATION (Details) - Reconciliation of Revenue from Segments to Consolidated - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 8,949	$ 12,936	$ 17,153	$ 25,890
Frequency Electronics Inc New York [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	7,680	10,381	14,534	20,543
Frequency Electronics Inc Zyfer [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	1,561	2,648	3,292	5,783
Inter Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ (292)	$ (93)	$ (673)	$ (436)