Investments in Marketable Securities (Details) - Schedule of Available-for-Sale Securities - USD ($) $ in Thousands	6 Months Ended
	Jan. 31, 2024	Jan. 31, 2023
Available-for-sale securities:
Amortized cost	$ 64,599	$ 57,988
Gross unrealized gains	4	4,386
Gross unrealized (losses)	(16)	(4,660)
Fair value	64,587	57,714
U.S. Treasury Bills [Member]
Available-for-sale securities:
Amortized cost	3,944	11,222
Gross unrealized gains		53
Gross unrealized (losses)
Fair value	3,944	11,275
U.S. Agency bonds [Member]
Available-for-sale securities:
Amortized cost	1,469
Gross unrealized gains
Gross unrealized (losses)
Fair value	1,469
Corporate bonds [Member]
Available-for-sale securities:
Amortized cost	59,186	46,766
Gross unrealized gains	4	4,333
Gross unrealized (losses)	(16)	(4,660)
Fair value	$ 59,174	$ 46,439