Intangible Assets (Tables)

3 Months Ended

Oct. 31, 2017

Finite-Lived Intangible Assets, Net [Abstract]

Intangible assets with finite lives

Intangible assets with finite lives are as follows:

	As of October 31, 2017
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization	Net Carrying Amount
Customer relationships	20.3	$	249,831,000	45,280,000	$	204,551,000
Technologies	12.3	82,370,000		50,064,000	32,306,000
Trademarks and other	16.4	28,894,000		9,149,000	19,745,000
Total		$	361,095,000	104,493,000	$	256,602,000

	As of July 31, 2017
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization	Net Carrying Amount
Customer relationships	20.3	$	249,831,000	41,923,000	$	207,908,000
Technologies	12.3	82,370,000		48,623,000	33,747,000
Trademarks and other	16.4	28,894,000		8,678,000	20,216,000
Total		$	361,095,000	99,224,000	$	261,871,000

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

The estimated amortization expense consists of the following for the fiscal years ending July 31,:

2018	$	21,075,000
2019	17,155,000
2020	17,155,000
2021	16,196,000
2022	14,955,000