Intangibles and Goodwill (Tables)

3 Months Ended

Oct. 31, 2016

Intangible Assets and Goodwill

Schedule of intangible assets

	October 31, 2016
			Accumulated
	Gross		Amortization		Net
Intangible assets with finite lives:
Customer relationships	$	112,556,000	$	(26,874,000)	$	85,682,000
Technology		46,923,000		(12,859,000)		34,064,000
Brand names		8,760,000		(2,582,000)		6,178,000
Non-compete agreements		3,092,000		(1,252,000)		1,840,000
Patents and other registrations		2,634,000		(947,000)		1,687,000
		173,965,000		(44,514,000)		129,451,000
Trademarks and tradenames		7,490,000		—		7,490,000
Total intangible assets	$	181,455,000	$	(44,514,000)	$	136,941,000

	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

Nine month period ending July 31, 2017	$	11,538,000
2018		15,129,000
2019		14,805,000
2020		13,056,000
2021		12,736,000
2022		12,000,000

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		2,028,000		—		16,503,000		—		18,531,000
Foreign currency translation		(2,938,000)		(120,000)		—		—		(3,058,000)
Balance, October 31, 2016	$	120,105,000	$	58,760,000	$	108,793,000	$	8,133,000	$	295,791,000