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SEGMENT INFORMATION (Details) - Reconciliation of Operating Profit (Loss) from Segments to Consolidated - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Operating (loss) profit:
Operating profit (loss)	$ (337)	$ (780)
Frequency Electronics Inc New York [Member]
Operating (loss) profit:
Operating profit (loss)	(623)	(1,232)
Frequency Electronics Inc Zyfer [Member]
Operating (loss) profit:
Operating profit (loss)	361	517
Corporate Segment [Member]
Operating (loss) profit:
Operating profit (loss)	$ (75)	$ (65)

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The net result for the period of deducting operating expenses from operating revenues.

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