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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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