Intangible Assets

9 Months Ended

Apr. 30, 2015

Finite-Lived Intangible Assets, Net [Abstract]

Intangible assets with finite lives as of April 30, 2015 and July 31, 2014 are as follows:



	April 30, 2015
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization	Net Carrying Amount
Technologies	11.8	$	47,370,000	38,533,000	$	8,837,000
Customer relationships	10.0	29,831,000		20,244,000	9,587,000
Trademarks and other	20.0	5,794,000		2,680,000	3,114,000
Total		$	82,995,000	61,457,000	$	21,538,000



	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 three months ended April 30, 2015 and 2014 was $1,561,000 and $1,560,000, respectively. Amortization expense for the nine months ended April 30, 2015 and 2014 was $4,682,000 and $4,724,000, respectively.

The estimated amortization expense for the fiscal years ending July 31, 2015, 2016, 2017, 2018, and 2019 is $6,211,000, $4,962,000, $4,782,000, $4,782,000 and $862,000, respectively.