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Employee Benefit Plans (Future Net Benefit Payments Expected for Post Employee Benefit Obligations) (Details)
$ in Thousands
Mar. 31, 2018
USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2019 $ 802
2020 946
2021 1,121
2022 1,317
2023 1,531
2024 through 2028 10,594
Total $ 16,311