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Note 8 - Short-Term Borrowings | 12 Months Ended
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Dec. 31, 2014
Disclosure Text Block [Abstract] |
Short-term Debt [Text Block] | Note 8. Short-Term Borrowings Short-term borrowings as of December 31, 2014 and 2013 are summarized as follows:
|  | 2014 |  |  | 2013 |
Overnight repurchase agreements with customers |  | $ | 137,251,670 |  |  | $ | 98,822,967 |
Federal funds purchased |  |  | 131,100,000 |  |  |  | 50,470,000 |
|  | $ | 268,351,670 |  |  | $ | 149,292,967 |
Information concerning overnight repurchase agreements with customers is summarized as follows as of December 31, 2014 and 2013:
|  | 2014 |  |  | 2013 |
Average daily balance during the period |  | $ | 128,818,152 |  |  | $ | 123,543,416 |
Average daily interest rate during the period |  |  | 0.12 | % |  |  | 0.12 | %
Maximum month-end balance during the period |  | $ | 147,623,624 |  |  | $ | 146,075,177 |
Weighted average rate as of end of period |  |  | 0.13 | % |  |  | 0.13 | %
Securities underlying the agreements as of end of period: |  |  |  |  |  |  |  |
Carrying value |  | $ | 165,360,426 |  |  | $ | 143,262,002 |
Fair value |  |  | 165,360,426 |  |  |  | 143,262,002 |
The securities underlying the agreements as of December 31, 2014 and 2013 were under the Company's control in safekeeping at third-party financial institutions. Information concerning federal funds purchased is summarized as follows as of December 31, 2014 and 2013:
|  | 2014 |  |  | 2013 |
Average daily balance during the period |  | $ | 33,876,815 |  |  | $ | 41,156,729 |
Average daily interest rate during the period |  |  | 0.40 | % |  |  | 0.40 | %
Maximum month-end balance during the period |  | $ | 131,100,000 |  |  | $ | 95,380,000 |
Weighted average rate as of end of period |  |  | 0.23 | % |  |  | 0.28 | %

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- Definition The entire disclosure for short-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 3: 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 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 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 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 9 + Details
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