CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2020	Jan. 31, 2019
Condensed Income Statements, Captions [Line Items]
Net revenue:	$ 215,452	$ 206,223	$ 440,605	$ 421,356
Cost of revenue	170,203	168,680	351,110	345,613
Gross profit	45,249	37,543	89,495	75,743
Operating expenses:
Selling, general and administrative	31,165	27,626	53,392	54,191
Amortization of intangible assets	6,911	7,791	14,188	15,890
Total operating expenses	38,076	35,417	67,580	70,081
Operating income	7,173	2,126	21,915	5,662
Other income (expense):
Interest income	14	172	30	495
Interest expense	(8,733)	(10,984)	(17,902)	(22,041)
Other losses, net	(823)	(1,662)	(265)	(718)
Total other expense	(9,542)	(12,474)	(18,137)	(22,264)
Income (loss) before income taxes	(2,369)	(10,348)	3,778	(16,602)
Income tax expense	1,188	1,405	2,543	2,536
Gains on investments in affiliates, net of tax	0	0	0	(20)
Net income (loss)	(3,557)	(11,753)	1,235	(19,118)
Less: Preferred dividends on redeemable preferred stock	(531)	(536)	(1,067)	(1,073)
Net income (loss) attributable to common stockholders	$ (4,088)	$ (12,289)	$ 168	$ (20,191)
Basic net earnings (loss) per share attributable to common stockholders	$ (0.07)	$ (0.20)	$ 0.00	$ (0.33)
Diluted net earnings (loss) per share attributable to common stockholders	$ (0.07)	$ (0.20)	$ 0.00	$ (0.33)
Weighted average common shares used in:
Basic earnings (loss) per share	61,538	60,935	61,469	60,974
Diluted earnings (loss) per share	61,538	60,935	61,482	60,974
Services
Condensed Income Statements, Captions [Line Items]
Net revenue:	$ 92,335	$ 87,776	$ 184,485	$ 174,815
Goods
Condensed Income Statements, Captions [Line Items]
Net revenue:	$ 123,117	$ 118,447	$ 256,120	$ 246,541