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Goodwill and Intangible Assets - Estimated Useful lives of the Acquired Identifiable Intangible Assets (Detail)
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12 Months Ended |
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Dec. 31, 2013
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Maximum [Member]
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| Finite-Lived Intangible Assets [Line Items] | |
| Estimated useful lives | 7 years 6 months |
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Minimum [Member]
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| Finite-Lived Intangible Assets [Line Items] | |
| Estimated useful lives | 1 year 6 months |
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Non-compete Agreements [Member] | Maximum [Member]
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| Finite-Lived Intangible Assets [Line Items] | |
| Estimated useful lives | 5 years |
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Non-compete Agreements [Member] | Minimum [Member]
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| Finite-Lived Intangible Assets [Line Items] | |
| Estimated useful lives | 4 years |
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Customer Relationships [Member] | Maximum [Member]
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| Finite-Lived Intangible Assets [Line Items] | |
| Estimated useful lives | 7 years 6 months |
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Customer Relationships [Member] | Minimum [Member]
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| Finite-Lived Intangible Assets [Line Items] | |
| Estimated useful lives | 4 years |
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Asset Purchase Agreement [Member]
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| Finite-Lived Intangible Assets [Line Items] | |
| Estimated useful lives | 1 year 6 months |
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Trade Name and Trademark [Member]
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| Finite-Lived Intangible Assets [Line Items] | |
| Estimated useful lives | 5 years |
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Capitalized Product Development Costs [Member]
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| Finite-Lived Intangible Assets [Line Items] | |
| Estimated useful lives | 3 years |