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Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Finite-Lived Intangible Assets [Line Items] | |||
| Amortization of intangible assets | $ 20,424 | $ 7,511 | $ 3,868 |
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Customer relationships
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| Finite-Lived Intangible Assets [Line Items] | |||
| Impairment charge | $ 4,500 | $ 2,400 | |