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Employee Retirement Plans (Schedule of Expected Benefit Payments) (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2017 $ 360
2018 327
2019 228
2020 137
2021 100
Years 2022 - 2026 $ 392