Intangible Assets

3 Months Ended

Oct. 31, 2013

Finite-Lived Intangible Assets, Net [Abstract]

Intangible Assets

(17)    Intangible Assets

Intangible assets with finite lives as of October 31, 2013 and July 31, 2013 are as follows:

	October 31, 2013
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization	Net Carrying Amount
Technologies	11.7	$	47,370,000	33,926,000	$	13,444,000
Customer relationships	10.0	29,831,000		15,818,000	14,013,000
Trademarks and other	20.0	5,794,000		2,328,000	3,466,000
Total		$	82,995,000	52,072,000	$	30,923,000

	July 31, 2013
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization	Net Carrying Amount
Technologies	11.7	$	47,494,000	33,264,000	$	14,230,000
Customer relationships	10.0	29,831,000		15,081,000	14,750,000
Trademarks and other	20.0	5,944,000		2,419,000	3,525,000
Total		$	83,269,000	50,764,000	$	32,505,000

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

Amortization expense for both the three months ended October 31, 2013 and 2012 was $1,582,000.

The estimated amortization expense for the fiscal years ending July 31, 2014, 2015, 2016, 2017, and 2018 is $6,285,000, $6,211,000, $4,962,000, $4,782,000 and $4,782,000, respectively.