Intangibles and Goodwill (Tables)

12 Months Ended

Jul. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets

Our intangible assets consist of the following:

	July 31, 2018							July 31, 2017
	Gross		Accumulated Amortization			Net		Gross		Accumulated Amortization			Net
Intangible assets with finite lives:
Customer relationships	$	133,347	$	(45,618	)	$	87,729	$	119,576	$	(34,773	)	$	84,803
Technology(1)	54,585		(19,836		)	34,749		39,064		(15,260		)	23,804
Brand names	8,141		(3,857		)	4,284		8,188		(3,225		)	4,963
Non-compete agreements	3,060		(1,628		)	1,432		3,092		(1,428		)	1,664
Patents and other registrations	2,826		(1,179		)	1,647		2,783		(1,053		)	1,730
	201,959		(72,118		)	129,841		172,703		(55,739		)	116,964
Trademarks and tradenames	7,520		—			7,520		7,548		—			7,548
Total intangible assets	$	209,479	$	(72,118	)	$	137,361	$	180,251	$	(55,739	)	$	124,512

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(1) The gross and accumulated amortization amounts previously reported as of July 31, 2017 have been revised to exclude the $3,730 fully amortized technology intangible asset and associated accumulated amortization related to the Jet Prep business. This did not result in any change to the net technology intangible asset as of July 31, 2017.

Schedule of changes in goodwill

Goodwill changed during fiscal 2018 and 2017 as follows:

	Endoscopy			Water Purification and Filtration			Healthcare Disposables		Dialysis		Total Goodwill
Balance, August 1, 2016	$	121,015		$	58,880		$	92,290	$	8,133	$	280,318
Acquisitions	8,193			—			21,989		—		30,182
Foreign currency translation	737			208			—		—		945
Balance, July 31, 2017	129,945			59,088			114,279		8,133		311,445
Acquisitions	58,026			—			—		—		58,026
Foreign currency translation	(1,281		)	(163		)	—		—		(1,444		)
Balance, July 31, 2018	$	186,690		$	58,925		$	114,279	$	8,133	$	368,027