Leases - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
Leases [Abstract] | |||
Minimum lease period | 1 year | ||
Rental expense for all operating leases | $ 11,788 | $ 8,787 | $ 9,039 |