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Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
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12 Months Ended | 0 Months Ended | 12 Months Ended | 12 Months Ended | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2013
Maximum [Member]
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Dec. 31, 2013
Minimum [Member]
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Dec. 31, 2013
Bold [Member]
Maximum [Member]
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Dec. 31, 2013
Bold [Member]
Minimum [Member]
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Nov. 06, 2013
Technology [Member]
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Dec. 31, 2013
Technology [Member]
Maximum [Member]
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Dec. 31, 2013
Technology [Member]
Minimum [Member]
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Dec. 31, 2013
Technology [Member]
Bold [Member]
|
Dec. 31, 2013
Trade Name and Trademark [Member]
Bold [Member]
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Dec. 31, 2013
Customer Relationships [Member]
Bold [Member]
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Dec. 31, 2013
Non-Compete Agreements [Member]
Bold [Member]
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Dec. 31, 2013
Domain Names [Member]
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Dec. 31, 2012
Domain Names [Member]
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Dec. 31, 2013
Domain Names [Member]
Maximum [Member]
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| Finite-Lived Intangible Assets [Line Items] | |||||||||||||||||
| Intangible assets acquired | $ 1,090,000 | $ 30,000 | $ 2,760,000 | $ 160,000 | |||||||||||||
| Intangible assets, estimated useful life | 7 years | 1 year | 7 years | 1 year | 6 years | 3 years | 5 years | ||||||||||
| Asset Purchased | 11,500,000 | ||||||||||||||||
| Estimated useful life period | 5 years | ||||||||||||||||
| Internally developed software | 1,200,000 | 742,000 | |||||||||||||||
| Intangible asset additions | 13,061,000 | 1,049,000 | 346,000 | 358,000 | 311,000 | ||||||||||||
| Total amortization of intangible assets | $ 2,500,000 | $ 2,100,000 | $ 794,000 | ||||||||||||||