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Schedule of Contractual Maturities of Available-for-sale Debt Securities (Details) - USD ($)
$ in Thousands
Jul. 31, 2022
Jul. 31, 2021
Debt Securities, Trading and Available-for-Sale [Abstract]    
Within one year $ 15,374  
After one year through five years 3,729  
After five years through ten years 2,634  
After ten years 566  
TOTAL $ 22,303 $ 14,012