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Derivatives and Hedging Activities Notional Value of Derivatives Outstanding (Details) - USD ($) $ in Thousands | Apr. 30, 2023 | Jul. 31, 2022
--- | --- | ---
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 10,998 | $ 29,333
Designated as Hedging Instrument [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | 6,328 | 25,276
Not designated as hedging Instruments [Member] |  |
Derivative [Line Items] |  |
Derivative, Notional Amount | $ 4,670 | $ 4,057

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