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Short-Term Borrowings and Long-Term Debt Maturiities (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Short-Term Borrowings and Long-Term Debt [Abstract]  
2017 $ 114,415
2018 0
2019 202,731
2020 142,370
2021 199,444
Thereafter 270,443
Long Term Debt Maturities Total $ 929,403