Intangible Assets

12 Months Ended

Jul. 31, 2015

Finite-Lived Intangible Assets, Net [Abstract]

Intangible assets with finite lives as of July 31, 2015 and 2014 are as follows:



	July 31, 2015
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization	Net Carrying Amount
Technologies	12.1	$	47,370,000	39,266,000	$	8,104,000
Customer relationships	10.0	29,831,000		20,981,000	8,850,000
Trademarks and other	20.0	5,794,000		2,739,000	3,055,000
Total		$	82,995,000	62,986,000	$	20,009,000



	July 31, 2014
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization	Net Carrying Amount
Technologies	11.8	$	47,370,000	36,240,000	$	11,130,000
Customer relationships	10.0	29,831,000		18,031,000	11,800,000
Trademarks and other	20.0	5,794,000		2,504,000	3,290,000
Total		$	82,995,000	56,775,000	$	26,220,000

The weighted average amortization period in the above table excludes fully amortized intangible assets.

Amortization expense for the years ended July 31, 2015, 2014 and 2013 was $6,211,000, $6,285,000 and $6,328,000, respectively.

The estimated amortization expense for the fiscal years ending July 31, 2016, 2017, 2018, 2019 and 2020 is $4,962,000, $4,782,000, $4,782,000, $862,000 and $862,000, respectively.