Intangible Assets and Goodwill (Tables)

3 Months Ended

Oct. 31, 2013

Intangible Assets and Goodwill

Schedule of intangible assets

	October 31, 2013
			Accumulated
	Gross		Amortization			Net
Intangible assets with finite lives:
Customer relationships	$	71,846,000	$	(26,483,000	)	$	45,363,000
Technology	20,509,000		(9,730,000		)	10,779,000
Brand names	12,680,000		(8,392,000		)	4,288,000
Non-compete agreements	3,159,000		(603,000		)	2,556,000
Patents and other registrations	1,820,000		(653,000		)	1,167,000
	110,014,000		(45,861,000		)	64,153,000
Trademarks and trade names	9,359,000		—			9,359,000
Total intangible assets	$	119,373,000	$	(45,861,000	)	$	73,512,000

	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 trade names	9,387,000		—			9,387,000
Total intangible assets	$	120,142,000	$	(44,213,000	)	$	75,929,000

Schedule of estimated annual amortization expense of intangible assets for remainder of fiscal 2014 and the next five years

Nine month period ending July 31, 2014	$	7,856,000
Fiscal 2015	10,229,000
Fiscal 2016	6,989,000
Fiscal 2017	6,413,000
Fiscal 2018	6,136,000
Fiscal 2019	5,813,000

Schedule of changes in goodwill

			Water
			Purification			Healthcare							Total
	Endoscopy		and Filtration			Disposables		Dialysis		Other			Goodwill
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
Foreign currency translation	—		(87,000		)	—		—		(102,000		)	(189,000		)
Balance, October 31, 2013	$	59,230,000	$	57,092,000		$	80,108,000	$	8,133,000	$	6,866,000		$	211,429,000