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ST Debt (Tables) | 12 Months Ended
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Dec. 31, 2017
Short-term Debt [Line Items] |
Short-term Debt [Text Block] | Short-term borrowings, including current portion of long-term debt, consists of the following at December 31:
|  | 2017 |  | 2016
3.00% note, due 2018 |  | $ | 299,857 |  |  | $ | — |
Other short-term borrowings |  | 56,949 |  |  | 93,827 |
|  | $ | 356,806 |  |  | $ | 93,827 |

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