CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Income Statement [Abstract]
Net revenue	$ 46,142	$ 51,548	$ 148,283	$ 150,223
Cost of revenue	33,218	42,303	108,031	120,672
Gross profit	12,924	9,245	40,252	29,551
Operating expenses:
Selling, general and administrative	12,619	9,214	33,463	28,899
Total operating expenses	12,619	9,214	33,463	28,899
Operating income	305	31	6,789	652
Other income (expense):
Interest income	452	3	928	9
Interest expense	(914)	(848)	(2,588)	(2,359)
Other income, net	4,037	2,151	3,961	1,605
Total other income (expense), net	3,575	1,306	2,301	(745)
Income (loss) from continuing operations before income taxes	3,880	1,337	9,090	(93)
Income tax expense	851	11,032	1,630	12,070
Net income (loss) from continuing operations	3,029	(9,695)	7,460	(12,163)
Net income (loss) from discontinued operations	0	39,895	0	(108)
Net income (loss)	3,029	30,200	7,460	(12,271)
Less: Preferred dividends on Series C redeemable preferred stock	(519)	(537)	(1,593)	(1,611)
Net income (loss) attributable to common stockholders	$ 2,510	$ 29,663	$ 5,867	$ (13,882)
Net income (loss) per common shares - basic
Continuing operations - basic (in usd per share)	$ 0.04	$ (0.17)	$ 0.10	$ (0.23)
Discontinued operations - basic (in usd per share)	0	0.67	0	0
Net income (loss) attributable to common stockholders - basic (in usd per share)	0.04	0.50	0.10	(0.23)
Net income (loss) per common shares - diluted
Continuing operations - diluted (in usd per share)	0.04	(0.17)	0.09	(0.23)
Discontinued operations - diluted (in usd per share)	0	0.67	0	0
Net income (loss) attributable to common stockholders - diluted (in usd per share)	$ 0.04	$ 0.50	$ 0.09	$ (0.23)
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted-average number of common shares outstanding - basic (in shares)	60,305	59,853	60,186	59,961
Weighted-average number of common shares outstanding - diluted (in shares)	78,695	59,853	78,559	59,961