Intangibles and Goodwill (Tables)

12 Months Ended

Jul. 31, 2013

Intangibles and Goodwill

Schedule of intangible assets

	July 31, 2013
			Accumulated
	Gross		Amortization			Net
Intangible assets with finite lives:
Customer relationships	$	72,142,000	$	(25,379,000	)	$	46,763,000
Technology	21,006,000		(9,642,000		)	11,364,000
Brand names	12,680,000		(8,045,000		)	4,635,000
Non-compete agreements	3,159,000		(541,000		)	2,618,000
Patents and other registrations	1,768,000		(606,000		)	1,162,000
	110,755,000		(44,213,000		)	66,542,000
Trademarks and tradenames	9,387,000		—			9,387,000
Total intangible assets	$	120,142,000	$	(44,213,000	)	$	75,929,000

	July 31, 2012
			Accumulated
	Gross		Amortization			Net
Intangible assets with finite lives:
Customer relationships	$	60,271,000	$	(20,421,000	)	$	39,850,000
Technology	20,797,000		(7,590,000		)	13,207,000
Brand names	11,945,000		(6,778,000		)	5,167,000
Non-compete agreements	3,147,000		(404,000		)	2,743,000
Patents and other registrations	1,372,000		(463,000		)	909,000
	97,532,000		(35,656,000		)	61,876,000
Trademarks and tradenames	9,435,000		—			9,435,000
Total intangible assets	$	106,967,000	$	(35,656,000	)	$	71,311,000

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

Year Ending July 31,
2014	$	10,462,000
2015	10,205,000
2016	6,965,000
2017	6,389,000
2018	6,112,849

Schedule of changes in goodwill

			Water
			Purification			Healthcare							Total
	Endoscopy		and Filtration			Disposables		Dialysis		Other			Goodwill
Balance, July 31, 2011	$	9,648,000	$	53,597,000		$	55,864,000	$	8,133,000	$	7,528,000		$	134,770,000
Acquisitions	49,582,000		—			—		—		—			49,582,000
Foreign currency translation	—		(309,000		)	—		—		(388,000		)	(697,000		)
Balance, July 31, 2012	59,230,000		53,288,000			55,864,000		8,133,000		7,140,000			183,655,000
Acquisitions	—		4,043,000			24,244,000		—		—			28,287,000
Foreign currency translation	—		(152,000		)	—		—		(172,000		)	(324,000		)
Balance, July 31, 2013	$	59,230,000	$	57,179,000		$	80,108,000	$	8,133,000	$	6,968,000		$	211,618,000