NOTE F - SEGMENT INFORMATION (Details) - Reconciliation of Revenue from Segments to Consolidated (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2014	Oct. 31, 2013
Revenues:
Net revenues	$ 19,243	$ 17,007	$ 38,983	$ 33,834
Operating Segments [Member] | Frequency Electronics Inc New York [Member]
Revenues:
Net revenues	14,680	12,865	31,937	26,039
Operating Segments [Member] | Gillam Frequency Electronics Inc [Member]
Revenues:
Net revenues	3,056	1,873	4,547	4,568
Operating Segments [Member] | Frequency Electronics Inc Zyfer [Member]
Revenues:
Net revenues	3,060	2,363	4,180	4,352
Intersegment Eliminations [Member]
Revenues:
Net revenues	$ (1,553)	$ (94)	$ (1,681)	$ (1,125)