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ACQUIRED INTANGIBLE ASSETS, NET | 12 Months Ended
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Dec. 31, 2012
ACQUIRED INTANGIBLE ASSETS, NET [Abstract] |
ACQUIRED INTANGIBLE ASSETS, NET | 9. ACQUIRED INTANGIBLE ASSETS, NET Acquired intangible assets, net consist of the following:
|  | At December 31, |
|  | 2011 |  |  | 2012 |
Cost: |  |  |  |  |  |  |  |
Purchased software |  | $ | 5,654 |  |  | $ | 6,803 |
Technology licenses |  |  | 12,261 |  |  |  | 15,268 |
|  |  | 17,915 |  |  |  | 22,071 |
Accumulated amortization: |  |  |  |  |  |  |  |
Purchased software |  |  | (4,232 | ) |  |  | (5,661 | )
Technology licenses |  |  | (3,824 | ) |  |  | (5,591 | )
|  |  | (8,056 | ) |  |  | (11,252 | )
IPR&D not subject to amortization |  |  | 420 |  |  |  | 420 |
Less: Impairment loss in respect of IPR&D recognized |  |  | (420 | ) |  |  | (420 | )
Acquired intangible assets, net |  | $ | 9,859 |  |  | $ | 10,819 |
The intangible assets of the Group mainly consist of purchased software which is used to support the business administration and the electronic design automation, and technology licenses acquired for the purpose of utilizing certain intellectual property held by third parties. The Group has recorded amortization expense of $1,901, $1,803, and $3,056 for the years ended December 31, 2010, 2011 and 2012, respectively. Intangible asset amortization expense is estimated to be $3,182, $2,644, $2,298, $1,801 and $877 for the 2013, 2014, 2015, 2016 and 2017 fiscal years, respectively. In 2011, the Group compared the IPR&D's carrying value to its respective fair value. The Group estimated the fair value of the IPR&D by the income approach. Significant assumptions inherent in the valuation methodologies for IPR&D are employed and include, but are not limited to, prospective financial information and discount rates. Based on this quantitative test, the Group determined that the fair value of the IPR&D tested in 2011 was lower than its carrying amount because the management decided to cease the entire research and development project of the application for Android, which is the primarily line of business of Mavrix reporting unit, due to of technological failure. Accordingly, the Group recognized an impairment loss of $ 420 on the IPR&D.

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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 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. Reference 2: 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 3: 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 4: 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 + Details
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