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Commitments and Contingencies - Rental Income Due Under Non-Cancellable Operating Leases (Detail)
$ in Thousands
Dec. 31, 2016
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2017 $ 2,669
2018 2,603
2019 2,496
2020 2,263
2021 1,819
Thereafter 11,983
Total $ 23,833