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Short Term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Lines Of Credit Facility
Established Lines at Year-End	$ 9,200	$ 60,000
Maximum Amount Outstanding	2,800	13,100
Average Outstanding	18,600	7,400
Notes Payable at Year-End	$ 28,000	$ 12,000
Weighted Average Interest Rate	2.15%	1.54%
Weighted Average Interest Rate at Year-End	2.54%	1.71%

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- Definition

Average amount borrowed under the credit facility during the period.

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- Definition

The effective interest rate at the end of the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.5-02.19(b),22(b))
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The effective interest rate during the reporting period.

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Maximum amount borrowed under the credit facility at any time during the period.

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Maximum month-end amount borrowed under the credit facility during the period.

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