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Future Minimum Cash Payments Under Non-cancelable Operating Leases (Detail)
$ in Thousands
Dec. 31, 2016
USD ($)
Future Minimum Payments Under Non-Cancelable Operating Leases With Initial Terms Of One-Year Or More [Line Items]  
2017 $ 3,227
2018 3,185
2019 2,157
2020 117
Total $ 8,686