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Short-term Borrowings | 12 Months Ended
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Dec. 31, 2012
Short-term Debt [Abstract] |
Short-term Borrowings | Note 5 – Short-term Borrowings Information regarding the Company’s short-term borrowings for the years ended December 31, 2012 and 2011 is summarized below:
|  | (Millions of Dollars) |
|  | 2012 |  |  | 2011 |
Established Lines at Year-End |  | $ | 60.0 |  |  | $ | 60.0 |
Maximum Amount Outstanding |  |  | 29.0 |  |  |  | 24.3 |
Average Outstanding |  |  | 25.5 |  |  |  | 20.7 |
Notes Payable at Year-End |  |  | 28.0 |  |  |  | 24.3 |
Weighted Average Interest Rate |  |  | 1.43 | % |  |  | 1.44 | %
Weighted Average Interest Rate at Year-End |  |  | 1.40 | % |  |  | 1.33 | %
The maturity dates for the Notes Payable as of December 31, 2012 are all in January 2013 and are extendable at the discretion of the Company. Interest rates for short-term borrowings are below the prime rate with no requirement for compensating balances.

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- Definition The entire disclosure for short-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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