NOTE F - SEGMENT INFORMATION (Details) - Reconciliation of Revenue from Segments to Consolidated - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2015	Jul. 31, 2014
Net revenues:
Revenues	$ 16,680	$ 19,740
Frequency Electronics Inc New York [Member]
Net revenues:
Revenues	13,494	17,257
Gillam Frequency Electronics Inc [Member]
Net revenues:
Revenues	1,407	1,491
Frequency Electronics Inc Zyfer [Member]
Net revenues:
Revenues	2,100	1,120
Inter Segment [Member]
Net revenues:
Revenues	$ (321)	$ (128)