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Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Purchased intangible assets net | $ 21,068 | $ 1,493
Intangible assets accumulated amortization | 15,070 | 14,050
Acquired software licenses |  |
Finite-Lived Intangible Assets [Line Items] |  |
Purchased intangible assets net | 400 | 400
Intangible assets accumulated amortization | $ 2,800 | $ 2,400

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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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