Intangible Assets

12 Months Ended

Jul. 31, 2011

Intangible Assets [Abstract]

Intangible Assets

(16) Intangible Assets

Intangible assets with finite lives as of July 31, 2011 and 2010 are as follows:

	July 31, 2011
	Weighted Average Amortization Period	Gross Carrying Amount	Accumulated Amortization	Net Carrying Amount
Technologies	10.2	$     47,694,000	27,000,000	$   20,694,000
Customer relationships	10.0	29,931,000	9,281,000	20,650,000
Trademarks and other	18.6	6,044,000	1,918,000	4,126,000
Total		$     83,669,000	38,199,000	$   45,470,000

	July 31, 2010
	Weighted Average Amortization Period	Gross Carrying Amount	Accumulated Amortization	Net Carrying Amount
Technologies	10.6	$     42,224,000	22,531,000	$   19,693,000
Customer relationships	9.9	29,931,000	6,223,000	23,708,000
Trademarks and other	17.6	6,044,000	1,354,000	4,690,000
Total		$     78,199,000	30,108,000	$   48,091,000

The weighted average amortization period in the above table excludes fully amortized intangible assets. Amortization expense for the years ended July 31, 2011, 2010 and 2009 was $8,091,000, $7,294,000 and $7,592,000, respectively. The estimated amortization expense for the fiscal years ending July 31, 2012, 2013, 2014, 2015 and 2016 is $6,637,000, $6,327,000, $6,285,000, $6,211,000 and $4,962,000, respectively.