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Future Net Minimum Lease Payments under Non-cancelable Operating Lease Agreements (Detail)
$ in Thousands
Dec. 31, 2016
USD ($)
Leases [Abstract]  
2017 $ 2,426
2018 2,202
2019 2,099
2020 2,158
2021 2,033
Thereafter 5,251
Totals $ 16,169