Goodwill and Intangible Assets (Tables)

6 Months Ended

Jan. 31, 2018

Text Block [Abstract]

Changes in Carrying Amount of Goodwill

Changes in the carrying amount of goodwill for the six months ended January 31, 2018, were as follows:

	IDS		WPS		Total
Balance as of July 31, 2017	$	391,864	$	45,833	$	437,697
Translation adjustments	4,110		2,066		6,176
Balance as of January 31, 2018	$	395,974	$	47,899	$	443,873

Other Intangible Assets

The net book value of these assets was as follows:

	January 31, 2018								July 31, 2017
	Weighted Average Amortization Period (Years)	Gross Carrying Amount		Accumulated Amortization			Net Book Value		Weighted Average Amortization Period (Years)	Gross Carrying Amount		Accumulated Amortization			Net Book Value
Amortized other intangible assets:
Patents	5	$	1,441	$	(697	)	$	744	5	$	1,358	$	(471	)	$	887
Trademarks and other	9	4,654		(4,469		)	185		9	4,528		(4,229		)	299
Customer relationships	8	61,501		(35,545		)	25,956		8	60,759		(31,909		)	28,850
Unamortized other intangible assets:
Trademarks	N/A	23,246		—			23,246		N/A	23,040		—			23,040
Total		$	90,842	$	(40,711	)	$	50,131		$	89,685	$	(36,609	)	$	53,076