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Commitments and Contingencies - Company Lease of Buildings under Non-Cancellable Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Leases [Abstract]  
2013-6 months $ 1,309
2014 2,603
2015 2,422
2016 2,126
2017 1,787
2018 1,726
Beyond 4,588
Total $ 16,561