CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 31, 2021	Oct. 31, 2020
Condensed Income Statements, Captions [Line Items]
Net revenue	$ 125,413	$ 169,934
Cost of revenue	110,133	129,466
Gross profit	15,280	40,468
Operating expenses:
Selling, general and administrative	22,005	26,858
Amortization of intangible assets	4,182	6,535
Total operating expenses	26,187	33,393
Operating (loss) income	(10,907)	7,075
Other income (expense):
Interest income	4	20
Interest expense	(7,795)	(7,823)
Other losses, net	(481)	(2,019)
Total other expense, net	(8,272)	(9,822)
Loss before income taxes	(19,179)	(2,747)
Income tax expense	315	804
Net loss	(19,494)	(3,551)
Less: Preferred dividends on redeemable preferred stock	(537)	(537)
Net loss attributable to common stockholders	$ (20,031)	$ (4,088)
Basic net loss per share attributable to common stockholders (in usd per share)	$ (0.33)	$ (0.07)
Diluted net loss per share attributable to common stockholders (in usd per share)	$ (0.33)	$ (0.07)
Weighted average common shares used in:
Basic loss per share (in shares)	60,307	61,893
Diluted loss per share (in shares)	60,307	61,893
Products
Condensed Income Statements, Captions [Line Items]
Net revenue	$ 81,059	$ 105,708
Cost of revenue	75,185	81,192
Services
Condensed Income Statements, Captions [Line Items]
Net revenue	44,354	64,226
Cost of revenue	$ 34,948	$ 48,274