Schedule of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jul. 31, 2025	Jul. 31, 2024
Debt Securities, Available-for-Sale, Amortized Cost	$ 21,874	$ 23,818
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	2	11
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	(227)	(391)
Debt Securities, Available-for-Sale	21,649	23,438
US Treasury Bill Securities [Member]
Debt Securities, Available-for-Sale, Amortized Cost	12,953	16,641
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax		10
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	(27)	(66)
Debt Securities, Available-for-Sale	12,926	16,585
US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-Sale, Amortized Cost	5,554	3,356
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	(4)	(3)
Debt Securities, Available-for-Sale	5,550	3,353
Corporate Bond Securities [Member]
Debt Securities, Available-for-Sale, Amortized Cost	3,367	3,821
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	2	1
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	(196)	(322)
Debt Securities, Available-for-Sale	$ 3,173	$ 3,500

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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+ Details