Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Future Minimum Annual Rental Commitments Under Non-Cancelable Operating Leases (Detail)

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Commitments and Contingencies - Future Minimum Annual Rental Commitments Under Non-Cancelable Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Schedule Of Future Minimum Rental Payments For Operating Leases [Line Items]  
2013 $ 3,784
2014 3,771
2015 3,363
2016 2,844
2017 2,078
Thereafter 3,400
Total $ 19,240