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Employee Benefit Plans - Projected Benefit Payments (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2017 $ 1,033
2018 514
2019 1,053
2020 423
2021 624
2022-2026 $ 3,151