CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2022	Jan. 31, 2021
Condensed Income Statements, Captions [Line Items]
Net revenue	$ 120,638	$ 156,047	$ 246,051	$ 325,981
Cost of revenue	107,038	120,197	217,171	249,663
Gross profit	13,600	35,850	28,880	76,318
Operating expenses:
Selling, general and administrative	23,908	21,810	45,913	48,668
Amortization of intangible assets	3,903	5,359	8,085	11,894
Total operating expenses	27,811	27,169	53,998	60,562
Operating (loss) income	(14,211)	8,681	(25,118)	15,756
Other income (expense):
Interest income	2	0	6	20
Interest expense	(7,980)	(7,825)	(15,775)	(15,648)
Other losses, net	(65)	(2,161)	(546)	(4,180)
Total other expense, net	(8,043)	(9,986)	(16,315)	(19,808)
Loss before income taxes	(22,254)	(1,305)	(41,433)	(4,052)
Income tax expense	723	891	1,038	1,695
Net loss	(22,977)	(2,196)	(42,471)	(5,747)
Less: Preferred dividends on redeemable preferred stock	(537)	(530)	(1,074)	(1,067)
Net loss attributable to common stockholders	$ (23,514)	$ (2,726)	$ (43,545)	$ (6,814)
Basic net loss per share attributable to common stockholders (in usd per share)	$ (0.39)	$ (0.04)	$ (0.73)	$ (0.11)
Diluted net loss per share attributable to common stockholders (in usd per share)	$ (0.39)	$ (0.04)	$ (0.73)	$ (0.11)
Weighted average common shares used in:
Basic loss per share (in shares)	59,748	62,028	60,027	61,961
Diluted loss per share (in shares)	59,748	62,028	60,027	61,961
Products
Condensed Income Statements, Captions [Line Items]
Net revenue	$ 66,316	$ 91,155	$ 147,375	$ 196,863
Cost of revenue	63,617	68,740	138,802	149,932
Services
Condensed Income Statements, Captions [Line Items]
Net revenue	54,322	64,892	98,676	129,118
Cost of revenue	$ 43,421	$ 51,457	$ 78,369	$ 99,731