SEGMENT INFORMATION (Details) - Schedule of Reconciliation of Assets from Segment to Consolidated - USD ($) $ in Thousands	Jan. 31, 2022	Apr. 30, 2021
Segment Reporting, Asset Reconciling Item [Line Items]
Identifiable Assets	$ 81,216	$ 86,016
Frequency Electronics Inc New York [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Identifiable Assets	35,245	34,869
Frequency Electronics Inc Zyfer [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Identifiable Assets	10,714	12,888
Corporate Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Identifiable Assets	$ 35,257	$ 38,259