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Short Term Borrowings (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014
Lines Of Credit Facility |  |
Established Lines at Year-End | $ 60.0 | $ 60.0
Maximum Amount Outstanding | 19.0 | 33.5
Average Outstanding | 15.3 | 27.4
Notes Payable at Year-End | $ 3.0 | $ 19.0
Weighted Average Interest Rate | 1.19% | 1.41%
Weighted Average Interest Rate at Year-End | 1.41% | 1.17%

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