Intangibles and Goodwill (Tables)

12 Months Ended

Jul. 31, 2016

Intangible Assets and Goodwill

Schedule of intangible assets

	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

	July 31, 2015
			Accumulated
	Gross		Amortization		Net
Intangible assets with finite lives:
Customer relationships	$	97,697,000	$	(39,549,000)	$	58,148,000
Technology		26,508,000		(12,656,000)		13,852,000
Brand names		12,970,000		(10,865,000)		2,105,000
Non-compete agreements		3,129,000		(997,000)		2,132,000
Patents and other registrations		2,235,000		(788,000)		1,447,000
		142,539,000		(64,855,000)		77,684,000
Trademarks and tradenames		8,152,000		—		8,152,000
Total intangible assets	$	150,691,000	$	(64,855,000)	$	85,836,000

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

Year Ending July 31,
2017	$	13,086,000
2018		12,787,000
2019		12,464,000
2020		10,710,000
2021		10,375,000

Schedule of changes in goodwill

			Water
			Purification		Healthcare						Total
	Endoscopy		and Filtration		Disposables		Dialysis		Other		Goodwill
Balance, July 31, 2014	$	78,274,000	$	56,838,000	$	81,835,000	$	8,133,000	$	6,567,000	$	231,647,000
Acquisitions		11,093,000		2,965,000		6,104,000		—		—		20,162,000
Foreign currency translation		(2,360,000)		(931,000)		—		—		(827,000)		(4,118,000)
Sale of business		—		—		—		—		(5,740,000)		(5,740,000)
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