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Profit-Sharing, Pension, and Other Postretirement Benefit Plans (Details 4)
$ in Thousands
Dec. 31, 2015
USD ($)
Gross benefit payment obligations  
2016 $ 1,100
U.S. Retirement Plans (Pension Plan and RBP)  
Gross benefit payment obligations  
2016 1,115
2017 1,071
2018 1,026
2019 981
2020 977
2021 - 2024 $ 4,098