OTHER GAINS, NET- Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Jul. 31, 2023	Apr. 30, 2023	Jul. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other gains, net	$ 5,242	$ 4,471	$ 782
Proceeds Received from Sale of Investment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other gains, net		1,900
Settlement with Client
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other gains, net		1,400
Interest Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other gains, net		$ 900
Aerojet Share
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other gains, net	$ 5,100