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Note 10 - Fair Value of Financial Instruments (Details) - Quantitative Information About Recurring Level 3 Fair Value of Financial Instruments and the Fair Value Measurements (USD $) In Thousands, unless otherwise specified | 9 Months Ended |  |
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Sep. 30, 2014 | Jun. 30, 2014 | Dec. 31, 2013
Municipal [Member] | Minimum [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | 0.20% |  |
Municipal [Member] | Maximum [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | 4.00% |  |
Municipal [Member] | Weighted Average [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | (2.80%) |  |
Municipal [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Fair Value (in Dollars) | $ 12,453 | $ 10,592 | $ 9,223
Valuation Technique | Discounted cash flows |  |
Unobservable Input | Discount rate |  |
Municipal - 1 [Member] | Minimum [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | 7.00% |  |
Municipal - 1 [Member] | Maximum [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | 10.40% |  |
Municipal - 1 [Member] | Weighted Average [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | (8.40%) |  |
Municipal - 1 [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Unobservable Input | Discount rate |  |
Municipal - 2 [Member] | Minimum [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | 30.40% |  |
Municipal - 2 [Member] | Maximum [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | 39.70% |  |
Municipal - 2 [Member] | Weighted Average [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | (35.00%) |  |
Municipal - 2 [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Unobservable Input | Prepayment assumptions |  |
Trust Preferred Securities [Member] | Minimum [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | 0.20% |  |
Trust Preferred Securities [Member] | Maximum [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | 20.50% |  |
Trust Preferred Securities [Member] | Weighted Average [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | (10.50%) |  |
Trust Preferred Securities [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Fair Value (in Dollars) | 13,618 | 13,361 | 14,935
Valuation Technique | Discounted cash flows |  |
Unobservable Input | Defaults |  |
Junior subordinated debentures [Member] | Maximum [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | 7.00% |  |
Junior subordinated debentures [Member] | Weighted Average [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Range (Weighted Average) | (7.00%) |  |
Junior subordinated debentures [Member] |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Fair Value (in Dollars) | $ 29,535 | $ 29,388 | $ 29,570
Valuation Technique | Discounted cash flows |  |
Unobservable Input | Discount rate |  |

X
- Definition Interest rate of the unobservable input to the valuation technique. + References No definition available. + Details
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- Definition Unobservable input of the valuation technique. + References No definition available. + Details
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- Details
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- Definition Description of the inputs and valuation technique(s) used to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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