SEGMENT INFORMATION (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2022 USD ($)	Oct. 31, 2021 USD ($)	Oct. 31, 2022 USD ($)	Oct. 31, 2021 USD ($)
SEGMENT INFORMATION (Details) [Line Items]
Number of Reportable Segments			2
Revenues	$ 8,949	$ 12,936	$ 17,153	$ 25,890
Frequency Electronics Inc New York [Member]
SEGMENT INFORMATION (Details) [Line Items]
Number Of Principal Markets	3		3
Revenues	$ 7,680	10,381	$ 14,534	20,543
POC Revenue [Member]
SEGMENT INFORMATION (Details) [Line Items]
Revenues	8,654	12,228	16,607	24,629
POC Revenue [Member] | Frequency Electronics Inc New York [Member]
SEGMENT INFORMATION (Details) [Line Items]
Revenues	7,173	9,928	13,451	19,529
POT Revenue [Member]
SEGMENT INFORMATION (Details) [Line Items]
Revenues	295	708	546	1,261
POT Revenue [Member] | Frequency Electronics Inc New York [Member]
SEGMENT INFORMATION (Details) [Line Items]
Revenues	$ 507	$ 453	$ 1,083	$ 1,014