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Employee Benefits and Share-Based Compensation - Pension Benefits Expected to be Paid (Details 7)
$ in Thousands
Dec. 31, 2016
USD ($)
Compensation And Retirement Disclosure [Abstract]  
2017 $ 1,182
2018 1,077
2019 1,144
2020 1,154
2021 1,231
Next five years $ 8,185