NOTE F - SEGMENT INFORMATION (Details) - Reconciliation of Operating Profit (Loss) 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
Operating profit (loss):
Operating profit (loss)	$ 1,796	$ 1,264	$ 2,724	$ 2,227
Operating Segments [Member] | Frequency Electronics Inc New York [Member]
Operating profit (loss):
Operating profit (loss)	1,199	1,564	3,279	2,740
Operating Segments [Member] | Gillam Frequency Electronics Inc [Member]
Operating profit (loss):
Operating profit (loss)	65	(92)	(513)	(36)
Operating Segments [Member] | Frequency Electronics Inc Zyfer [Member]
Operating profit (loss):
Operating profit (loss)	665	(76)	159	(275)
Corporate, Non-Segment [Member]
Operating profit (loss):
Operating profit (loss)	$ (133)	$ (132)	$ (201)	$ (202)