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Intangible Assets | 6 Months Ended
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Jan. 31, 2014
Finite-Lived Intangible Assets, Net [Abstract] |
Intangible Assets | (17) Intangible Assets Intangible assets with finite lives as of January 31, 2014 and July 31, 2013 are as follows:
|  | January 31, 2014
|  | Weighted Average Amortization Period |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Technologies |  | 11.8 |  | $ | 47,370,000 |  |  | 34,711,000 |  |  | $ | 12,659,000 |
Customer relationships |  | 10.0 |  | 29,831,000 |  |  | 16,556,000 |  |  | 13,275,000 |
Trademarks and other |  | 20.0 |  | 5,794,000 |  |  | 2,387,000 |  |  | 3,407,000 |
Total |  |  |  | $ | 82,995,000 |  |  | 53,654,000 |  |  | $ | 29,341,000 |
|  | 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 January 31, 2014 and 2013 was $1,582,000. Amortization expense for both the six months ended January 31, 2014 and 2013 was $3,164,000. 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.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16373-109275 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44, 45, 46 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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