CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2023	Jan. 31, 2022	Jan. 31, 2023	Jan. 31, 2022
Income Statement [Abstract]
Net revenue	$ 50,781	$ 54,322	$ 102,140	$ 98,676
Cost of revenue	37,719	43,421	74,813	78,369
Gross profit	13,062	10,901	27,327	20,307
Operating expenses:
Selling, general and administrative	10,459	9,994	20,845	18,829
Restructuring	0	856	0	856
Total operating expenses	10,459	10,850	20,845	19,685
Operating income	2,603	51	6,482	622
Other income (expense):
Interest income	332	1	476	5
Interest expense	(848)	(750)	(1,674)	(1,512)
Other losses, net	(2,959)	(65)	(74)	(546)
Total other expense, net	(3,475)	(814)	(1,272)	(2,053)
(Loss) income from continuing operations before income taxes	(872)	(763)	5,210	(1,431)
Income tax (benefit) expense	(346)	723	779	1,038
Net (loss) income from continuing operations	(526)	(1,486)	4,431	(2,469)
Net loss from discontinued operations	0	(21,491)	0	(40,002)
Net (loss) income	(526)	(22,977)	4,431	(42,471)
Less: Preferred dividends on redeemable preferred stock	(537)	(537)	(1,074)	(1,074)
Net (loss) income attributable to common stockholders	$ (1,063)	$ (23,514)	$ 3,357	$ (43,545)
Net (loss) income per common shares - basic
Continuing operations, basic (in usd per share)	$ (0.02)	$ (0.03)	$ 0.06	$ (0.06)
Discontinued operations, basic (in usd per share)	0	(0.36)	0	(0.67)
Basic net income (loss) per share attributable to common stockholders (in usd per share)	(0.02)	(0.39)	0.06	(0.73)
Net (loss) income per common shares - diluted
Continuing operations, diluted (in usd per share)	(0.02)	(0.03)	0.06	(0.06)
Discontinued operations, diluted (in usd per share)	0	(0.36)	0	(0.67)
Diluted net income (loss) per share attributable to common stockholders (in usd per share)	$ (0.02)	$ (0.39)	$ 0.06	$ (0.73)
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Weighted -average common shares outstanding, basic (in shares)	60,178	59,748	60,129	60,027
Weighted -average common shares outstanding, diluted (in shares)	60,178	59,748	60,637	60,027