CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 31, 2023	Oct. 31, 2022
Income Statement [Abstract]
Net revenue	$ 41,341	$ 51,359
Cost of revenue	29,866	37,094
Gross profit	11,475	14,265
Operating expenses:
Selling, general and administrative	8,795	10,386
Amortization	875	0
Total operating expenses	9,670	10,386
Operating income	1,805	3,879
Other income (expense):
Interest income	3,219	144
Interest expense	(247)	(826)
Other gains, net	330	2,886
Total other income, net	3,302	2,204
Income before income taxes	5,107	6,083
Income tax expense	671	1,126
Net income	4,436	4,957
Less: Preferred dividends on Series C redeemable preferred stock	(536)	(537)
Net income attributable to common stockholders	$ 3,900	$ 4,420
Net income per common shares - basic (in usd per share)	$ 0.15	$ 0.69
Net income per common shares - diluted (in usd per share)	$ 0.15	$ 0.59
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted-average number of common shares outstanding - basic (in shares)	6,199	6,434
Weighted-average number of common shares outstanding - basic (in shares)	26,066	8,403