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Segment Information (Details) - Schedule of Reconciliation of Assets from Segment to Consolidated - USD ($) $ in Thousands	Apr. 30, 2020	Apr. 30, 2019
Identifiable assets:
Identifiable Assets	$ 91,276	$ 86,771
Identifiable Assets	(91,276)	(86,771)
Frequency Electronics Inc New York [Member]
Identifiable assets:
Identifiable Assets	44,599	54,295
Identifiable Assets	(44,599)	(54,295)
Frequency Electronics Inc Zyfer [Member]
Identifiable assets:
Identifiable Assets	13,344	10,478
Identifiable Assets	(13,344)	(10,478)
Inter Segment [Member]
Identifiable assets:
Identifiable Assets	8,586	8,346
Identifiable Assets	(8,586)	(8,346)
Corporate Segment [Member]
Identifiable assets:
Identifiable Assets	41,919	30,344
Identifiable Assets	$ (41,919)	$ (30,344)

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Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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