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Note 6 - Loans and Allowance for Credit Losses (Details) - Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 12 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 Troubled Debt Restructuring [Member] Commercial Real Estate Investment [Member] Performing Financing Receivable [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Commercial Real Estate Investment [Member] Performing Financing Receivable [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Commercial Real Estate Investment [Member] Nonperforming Financing Receivable [Member] | Sep. 30, 2014 Troubled Debt Restructuring [Member] Commercial Real Estate Investment [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Commercial Real Estate Investment [Member] | Sep. 30, 2014 Troubled Debt Restructuring [Member] Commercial Real Estate Owner Occupied [Member] Nonperforming Financing Receivable [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Commercial Real Estate Owner Occupied [Member] Nonperforming Financing Receivable [Member] | Sep. 30, 2014 Troubled Debt Restructuring [Member] Commercial Real Estate Owner Occupied [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Commercial Real Estate Owner Occupied [Member] | Sep. 30, 2014 Troubled Debt Restructuring [Member] Construction, Commercial And Residential [Member] Performing Financing Receivable [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Construction, Commercial And Residential [Member] Performing Financing Receivable [Member] | Sep. 30, 2014 Troubled Debt Restructuring [Member] Construction, Commercial And Residential [Member] Nonperforming Financing Receivable [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Construction, Commercial And Residential [Member] Nonperforming Financing Receivable [Member] | Sep. 30, 2014 Troubled Debt Restructuring [Member] Construction, Commercial And Residential [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Construction, Commercial And Residential [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Commercial Loan [Member] Nonperforming Financing Receivable [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Commercial Loan [Member] | Sep. 30, 2014 Troubled Debt Restructuring [Member] Performing Financing Receivable [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Performing Financing Receivable [Member] | Sep. 30, 2014 Troubled Debt Restructuring [Member] Nonperforming Financing Receivable [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member] Nonperforming Financing Receivable [Member] | Sep. 30, 2014 Troubled Debt Restructuring [Member] | Dec. 31, 2013 Troubled Debt Restructuring [Member]
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of Contracts | 1 | 0 | 1 | 0 |  |  |  | 2 | 3 |  |  | 1 | 1 |  |  |  |  | 2 | 2 |  | 3 |  |  |  |  | 5 | 9
TDRs |  |  |  |  | $ 3,356 | $ 3,377 | $ 217 | $ 3,356 | $ 3,594 | $ 2,118 | $ 4,081 | $ 2,118 | $ 4,081 | $ 4,521 | $ 4,567 | $ 912 | $ 912 | $ 5,433 | $ 5,479 | $ 4,042 | $ 4,042 | $ 7,877 | $ 7,944 | $ 3,030 | $ 9,252 | $ 10,907 | $ 17,196

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953676-111524 + Details
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