CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2024	Apr. 30, 2023	Apr. 30, 2024	Apr. 30, 2023
Income Statement [Abstract]
Net revenue	$ 43,855	$ 46,142	$ 128,240	$ 148,283
Cost of revenue	30,838	33,218	92,402	108,031
Gross profit	13,017	12,924	35,838	40,252
Operating expenses:
Selling, general and administrative	9,144	12,619	26,670	33,463
Amortization	893	0	2,661	0
Total operating expenses	10,037	12,619	29,331	33,463
Operating income	2,980	305	6,507	6,789
Other income (expense):
Interest income	3,656	452	10,374	928
Interest expense	(243)	(914)	(739)	(2,588)
Other (losses) gains, net	(2,533)	4,037	(1,635)	3,961
Total other income, net	880	3,575	8,000	2,301
Income before income taxes	3,860	3,880	14,507	9,090
Income tax (benefit) expense	(67,800)	851	(66,935)	1,630
Net income	71,660	3,029	81,442	7,460
Less: Preferred dividends on Series C redeemable preferred stock	(531)	(519)	(1,604)	(1,593)
Net income available to common stockholders	$ 71,129	$ 2,510	$ 79,838	$ 5,867
Net income per common shares - basic (in usd per share)	$ 2.73	$ 0.39	$ 3.07	$ 0.91
Net income per common shares - diluted (in usd per share)	$ 2.51	$ 0.36	$ 2.88	$ 0.89
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted-average number of common shares outstanding - basic (in shares)	6,224	6,461	6,211	6,449
Weighted-average number of common shares outstanding - basic (in shares)	28,599	8,431	28,580	8,417