Intangible Assets (Tables)

6 Months Ended

Jan. 31, 2018

Finite-Lived Intangible Assets, Net [Abstract]

Intangible assets with finite lives

Intangible assets with finite lives are as follows:

	As of January 31, 2018
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization	Net Carrying Amount
Customer relationships	20.3	$	249,831,000	48,636,000	$	201,195,000
Technologies	12.3	82,370,000		51,504,000	30,866,000
Trademarks and other	16.4	28,894,000		9,621,000	19,273,000
Total		$	361,095,000	109,761,000	$	251,334,000

	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