Intangibles and Goodwill (Tables)

9 Months Ended

Apr. 30, 2017

Intangible Assets and Goodwill

Schedule of intangible assets

	April 30, 2017
			Accumulated
	Gross		Amortization		Net
Intangible assets with finite lives:
Customer relationships	$	116,893,000	$	(32,017,000)	$	84,876,000
Technology		42,543,000		(15,416,000)		27,127,000
Brand names		8,163,000		(3,024,000)		5,139,000
Non-compete agreements		3,092,000		(1,370,000)		1,722,000
Patents and other registrations		2,828,000		(1,030,000)		1,798,000
		173,519,000		(52,857,000)		120,662,000
Trademarks and tradenames		7,477,000		—		7,477,000
Total intangible assets	$	180,996,000	$	(52,857,000)	$	128,139,000

	July 31, 2016
			Accumulated
	Gross		Amortization		Net
Intangible assets with finite lives:
Customer relationships	$	100,649,000	$	(24,689,000)	$	75,960,000
Technology		32,767,000		(11,813,000)		20,954,000
Brand names		6,194,000		(2,394,000)		3,800,000
Non-compete agreements		3,092,000		(1,193,000)		1,899,000
Patents and other registrations		2,508,000		(913,000)		1,595,000
		145,210,000		(41,002,000)		104,208,000
Trademarks and tradenames		7,511,000		—		7,511,000
Total intangible assets	$	152,721,000	$	(41,002,000)	$	111,719,000

Schedule of estimated amortization expense of intangible assets for the next five years

Three month period ending July 31, 2017	$	4,031,000
2018		15,892,000
2019		15,568,000
2020		13,815,000
2021		13,483,000
2022		12,746,000

Schedule of changes in goodwill

			Water
			Purification		Healthcare				Total
	Endoscopy		and Filtration		Disposables		Dialysis		Goodwill
Balance, July 31, 2015	$	87,007,000	$	58,872,000	$	87,939,000	$	8,133,000	$	241,951,000
Acquisitions		40,047,000		—		4,351,000		—		44,398,000
Foreign currency translation		(6,039,000)		8,000		—		—		(6,031,000)
Balance, July 31, 2016		121,015,000		58,880,000		92,290,000		8,133,000		280,318,000
Acquisitions		7,178,000		—		21,989,000		—		29,167,000
Foreign currency translation		(1,113,000)		(203,000)		—		—		(1,316,000)
Balance, April 30, 2017	$	127,080,000	$	58,677,000	$	114,279,000	$	8,133,000	$	308,169,000