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4. Intangible Assets, net (Tables)
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12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2012
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| Goodwill and Intangible Assets Disclosure [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||
| Intangible Assets |
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- Details
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| X | ||||||||||
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- Definition
Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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