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Employee Benefit Plans - Schedule of Expected Benefit Payments under Pension Plan (Detail)
$ in Thousands
Dec. 31, 2015
USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Rolling Maturity [Abstract]  
2016 $ 0
2017 15
2018 7
2019 71
2020 26
2021-2025 324
Total benefit payments $ 443