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Schedule of Contractual Maturities of Available-for-sale Debt Securities (Details) - USD ($) $ in Thousands	Oct. 31, 2021	Jul. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Within one year	$ 1,258
After one year through five years	6,326
After five years through ten years	5,249
After ten years	800
Total	$ 13,633	$ 14,012

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- Definition

Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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