Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Future Rental Payments Under Non-cancelable Operating Leases (Detail)

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Commitments and Contingencies - Future Rental Payments Under Non-cancelable Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Contingencies And Commitments [Line Items]  
2013 $ 624
2014 640
2015 663
2016 691
2017 235
Total $ 2,853