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Commitments and Contingencies - Future Minimum Rental Payments Required Under Non-Cancellable Leases (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]
2014	$ 3,858
2015	3,374
2016	2,640
2017	2,159
2018	643
Thereafter	474
Total	$ 13,148

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