Intangibles and Goodwill (Tables)

6 Months Ended

Jan. 31, 2017

Intangible Assets and Goodwill

Schedule of intangible assets

	January 31, 2017
			Accumulated
	Gross		Amortization		Net
Intangible assets with finite lives:
Customer relationships	$	113,700,000	$	(29,434,000)	$	84,266,000
Technology		42,261,000		(14,166,000)		28,095,000
Brand names		8,119,000		(2,819,000)		5,300,000
Non-compete agreements		3,092,000		(1,311,000)		1,781,000
Patents and other registrations		2,694,000		(983,000)		1,711,000
		169,866,000		(48,713,000)		121,153,000
Trademarks and tradenames		7,514,000		—		7,514,000
Total intangible assets	$	177,380,000	$	(48,713,000)	$	128,667,000

	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

Six month period ending July 31, 2017	$	7,912,000
2018		15,590,000
2019		15,266,000
2020		13,514,000
2021		13,188,000
2022		12,450,000

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		2,173,000		—		21,989,000		—		24,162,000
Foreign currency translation		(1,875,000)		32,000		—		—		(1,843,000)
Balance, January 31, 2017	$	121,313,000	$	58,912,000	$	114,279,000	$	8,133,000	$	302,637,000