CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands	12 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Net revenue:
Total net revenue	$ 613,766,000	$ 782,813,000
Cost of revenue:
Cost of revenue	484,153,000	619,854,000
Gross profit	129,613,000	162,959,000
Operating expenses:
Selling, general and administrative	96,528,000	103,261,000
Amortization of intangible assets	20,258,000	27,255,000
Impairment of goodwill	25,658,000	0
Total operating expenses	142,444,000	130,516,000
Operating (loss) income	(12,831,000)	32,443,000
Other income (expense):
Interest income	14,000	61,000
Interest expense	(31,139,000)	(33,969,000)
Other gains, net	1,176,000	2,098,000
Total other expense	(29,949,000)	(31,810,000)
(Loss) income before income taxes	(42,780,000)	633,000
Income tax expense	1,611,000	5,917,000
Net loss	(44,391,000)	(5,284,000)
Less: Preferred dividends on redeemable preferred stock	(2,129,000)	(2,129,000)
Net loss attributable to common stockholders	$ (46,520,000)	$ (7,413,000)
Basic net loss per share attributable to common stockholders (in usd per share)	$ (0.75)	$ (0.12)
Diluted net loss per share attributable to common stockholders (in usd per share)	$ (0.75)	$ (0.12)
Weighted average common shares used in:
Basic loss per share (in shares)	62,142	61,644
Diluted loss per share (in shares)	62,142	61,644
Products
Net revenue:
Total net revenue	$ 387,510,000	$ 444,360,000
Cost of revenue:
Cost of revenue	305,601,000	345,173,000
Services
Net revenue:
Total net revenue	226,256,000	338,453,000
Cost of revenue:
Cost of revenue	$ 178,552,000	$ 274,681,000