Derivative Notional Amounts (Details) - USD ($) $ in Thousands	Jul. 31, 2022	Jul. 31, 2021
Derivative [Line Items]
Derivative, Notional Amount	$ 29,333	$ 34,304
Designated as hedging instruments [Member]
Derivative [Line Items]
Derivative, Notional Amount	25,276	30,724
Not designated as hedging Instruments [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 4,057	$ 3,580