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Note 12 - Fair Value Measurements - Assets and Liabilities Measured at Fair Value On a Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Assets measured at a fair value on a recurring basis | $ 529,953 | $ 589,851
Liabilities measured at a fair value on a recurring basis | 94 | 747
Interest Rate Swap [Member] | Derivative Financial Instruments, Liabilities [Member] |  |
Liabilities measured at a fair value on a recurring basis | 23 | 692
Mortgage Banking Derivative [Member] | Derivative Financial Instruments, Liabilities [Member] |  |
Liabilities measured at a fair value on a recurring basis | 71 | 55
Derivative Financial Instruments, Assets [Member] | Interest Rate Swap [Member] |  |
Assets measured at a fair value on a recurring basis | 486 |
US Government Agencies Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 147,908 | 106,142
Residential Mortgage Backed Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 296,925 | 326,239
US States and Political Subdivisions Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 44,609 | 95,930
Corporate Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 10,147 | 9,579
Equity Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 218 | 218
Residential Mortgage Loan Long Term [Member] |  |
Assets measured at a fair value on a recurring basis | 29,567 | 51,629
Mortgage Banking Derivative [Member] |  |
Assets measured at a fair value on a recurring basis | 93 | 114
Fair Value, Inputs, Level 1 [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Liabilities measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member] | Derivative Financial Instruments, Liabilities [Member] |  |
Liabilities measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Mortgage Banking Derivative [Member] | Derivative Financial Instruments, Liabilities [Member] |  |
Liabilities measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Derivative Financial Instruments, Assets [Member] | Interest Rate Swap [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | US Government Agencies Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Residential Mortgage Backed Securities [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Corporate Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Residential Mortgage Loan Long Term [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 1 [Member] | Mortgage Banking Derivative [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 2 [Member] |  |
Assets measured at a fair value on a recurring basis | 528,142 | 588,019
Liabilities measured at a fair value on a recurring basis | 23 | 692
Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member] | Derivative Financial Instruments, Liabilities [Member] |  |
Liabilities measured at a fair value on a recurring basis | 23 | 692
Fair Value, Inputs, Level 2 [Member] | Mortgage Banking Derivative [Member] | Derivative Financial Instruments, Liabilities [Member] |  |
Liabilities measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 2 [Member] | Derivative Financial Instruments, Assets [Member] | Interest Rate Swap [Member] |  |
Assets measured at a fair value on a recurring basis | 486 |
Fair Value, Inputs, Level 2 [Member] | US Government Agencies Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 147,908 | 106,142
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Backed Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 296,925 | 326,239
Fair Value, Inputs, Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 44,609 | 95,930
Fair Value, Inputs, Level 2 [Member] | Corporate Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 8,647 | 8,079
Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 2 [Member] | Residential Mortgage Loan Long Term [Member] |  |
Assets measured at a fair value on a recurring basis | 29,567 | 51,629
Fair Value, Inputs, Level 2 [Member] | Mortgage Banking Derivative [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] |  |
Assets measured at a fair value on a recurring basis | 1,811 | 1,832
Liabilities measured at a fair value on a recurring basis | 71 | 55
Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member] | Derivative Financial Instruments, Liabilities [Member] |  |
Liabilities measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | Mortgage Banking Derivative [Member] | Derivative Financial Instruments, Liabilities [Member] |  |
Liabilities measured at a fair value on a recurring basis | 71 | 55
Fair Value, Inputs, Level 3 [Member] | Derivative Financial Instruments, Assets [Member] | Interest Rate Swap [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | US Government Agencies Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | Residential Mortgage Backed Securities [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | Corporate Debt Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 1,500 | 1,500
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member] |  |
Assets measured at a fair value on a recurring basis | 218 | 218
Fair Value, Inputs, Level 3 [Member] | Residential Mortgage Loan Long Term [Member] |  |
Assets measured at a fair value on a recurring basis |  |
Fair Value, Inputs, Level 3 [Member] | Mortgage Banking Derivative [Member] |  |
Assets measured at a fair value on a recurring basis | $ 93 | $ 114

X
- 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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- Definition Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity. + References No definition available. + Details
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