NOTE F - SEGMENT INFORMATION (Details) - Schedule of Reconciliation of Assets from Segment to Consolidated - USD ($) $ in Thousands	Jul. 31, 2015	Apr. 30, 2015
Identifiable assets:
Identifiable Assets	$ 119,122	$ 117,825
Frequency Electronics Inc New York [Member]
Identifiable assets:
Identifiable Assets	64,164	63,541
Gillam Frequency Electronics Inc [Member]
Identifiable assets:
Identifiable Assets	9,488	9,878
Frequency Electronics Inc Zyfer [Member]
Identifiable assets:
Identifiable Assets	11,902	11,088
Inter Segment [Member]
Identifiable assets:
Identifiable Assets	(6,668)	(8,775)
Corporate Segment [Member]
Identifiable assets:
Identifiable Assets	$ 40,236	$ 42,093