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Schedule of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Oct. 31, 2025	Jul. 31, 2025
Debt Securities, Available-for-Sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost	$ 25,357	$ 21,874
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	7	2
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	(178)	(227)
Debt Securities, Available-for-Sale	25,186	21,649
US Treasury Bill Securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost	15,876	12,953
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	(21)	(27)
Debt Securities, Available-for-Sale	15,855	12,926
US Government-sponsored Enterprises Debt Securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost	6,218	5,554
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	2
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	(1)	(4)
Debt Securities, Available-for-Sale	6,219	5,550
Corporate Bond Securities [Member]
Debt Securities, Available-for-Sale [Line Items]
Debt Securities, Available-for-Sale, Amortized Cost	3,263	3,367
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax	5	2
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax	(156)	(196)
Debt Securities, Available-for-Sale	$ 3,112	$ 3,173

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