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Acquired Intangible Assets (Parenthetical) (Detail)
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1 Months Ended |
|---|---|
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Dec. 31, 2012
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Minimum
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| Acquired Finite-Lived Intangible Assets [Line Items] | |
| Intangible assets, estimated useful life, maximum (in years) | 1 year |
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Maximum
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| Acquired Finite-Lived Intangible Assets [Line Items] | |
| Intangible assets, estimated useful life, maximum (in years) | 10 years |