Intangibles and Goodwill (Tables)

12 Months Ended

Jul. 31, 2015

Intangible Assets and Goodwill

Schedule of intangible assets

	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

	July 31, 2014
			Accumulated
	Gross		Amortization			Net
Intangible assets with finite lives:
Customer relationships	$	83,145,000	$	(31,336,000	)	$	51,809,000
Technology	26,405,000		(11,444,000		)	14,961,000
Brand names	12,680,000		(9,431,000		)	3,249,000
Non-compete agreements	3,129,000		(754,000		)	2,375,000
Patents and other registrations	2,073,000		(792,000		)	1,281,000
	127,432,000		(53,757,000		)	73,675,000
Trademarks and tradenames	9,277,000		—			9,277,000
Total intangible assets	$	136,709,000	$	(53,757,000	)	$	82,952,000

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

Year Ending July 31,
2016	$	10,444,000
2017	9,872,000
2018	9,569,000
2019	9,246,000
2020	7,488,000

Schedule of changes in goodwill

				Water
				Purification			Healthcare							Total
	Endoscopy			and Filtration			Disposables		Dialysis		Other			Goodwill
Balance, July 31, 2013	$	59,230,000		$	57,179,000		$	80,108,000	$	8,133,000	$	6,968,000		$	211,618,000
Acquisitions	19,225,000			—			1,727,000		—		—			20,952,000
Foreign currency translation	(181,000		)	(341,000		)	—		—		(401,000		)	(923,000		)
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