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Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
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Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | $ 423,756 | $ 420,163
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 39,084 | 47,335
US Government Agencies Debt Securities [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 39,084 | 47,335
Residential Mortgage Backed Securities [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 225,129 | 228,674
Residential Mortgage Backed Securities [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 225,129 | 228,674
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 180 | 165
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 219 | 219
Equity Securities [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 399 | 384
Residential Mortgage Loan Long-Term [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 41,254 | 42,030
Residential Mortgage Loan Long-Term [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 41,254 | 42,030
Municipal Bonds [Member] | Fair Value, Inputs, Level 2 [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 117,856 | 101,740
Municipal Bonds [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 117,856 | 101,740
Fair Value, Inputs, Level 1 [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 180 | 165
Fair Value, Inputs, Level 2 [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 423,323 | 419,779
Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Assets [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 34 |
Fair Value, Inputs, Level 3 [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | 253 | 219
Derivative Financial Instruments, Assets [Member] |  |
Note 11 - Fair Value Measurements (Details) - Assets and Liabilities at Fair Value [Line Items] |  |
Available for Sale Securities | $ 34 |

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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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