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Note 15 - Fair Value Measurements - Financial Assets and Liabilities Measured On a Non-recurring Basis (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Total at Fair Value | $ 37,981 |  | $ 58,889 |  |  |
Total Losses | 1,307 |  | 2,507 |  | $ 4,596 |
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Total at Fair Value | 6,006 |  | 10,047 |  |  |
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Total at Fair Value | 31,975 |  | 48,842 |  |  |
Impaired Loans [Member] |  |  |  |  |  |
Total at Fair Value | 23,936 |  | 39,685 |  |  |
Total Losses | 322 |  | 1,550 |  | 3,958 |
Impaired Loans [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Impaired Loans [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Impaired Loans [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Total at Fair Value | 23,936 |  | 39,685 |  |  |
Impaired Loans [Member] | Commercial Portfolio Segment [Member] |  |  |  |  |  |
Total at Fair Value | 2,813 |  | 6,317 |  |  |
Total Losses | 322 |  | 806 |  | 17 |
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Impaired Loans [Member] | Commercial Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Total at Fair Value | 2,813 |  | 6,317 |  |  |
Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |  |
Total at Fair Value | 9,444 |  | 20,359 |  |  |
Total Losses |  |  | 598 |  | 3,914 |
Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Total at Fair Value | 9,444 |  | 20,359 |  |  |
Impaired Loans [Member] | Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |  |  |  |  |
Total at Fair Value | 11,679 |  | 13,009 |  |  |
Total Losses |  |  | 146 |  | 27 |
Impaired Loans [Member] | Residential Mortgage and Equity Lines Portfolio Segment [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Impaired Loans [Member] | Residential Mortgage and Equity Lines Portfolio Segment [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Impaired Loans [Member] | Residential Mortgage and Equity Lines Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Total at Fair Value | 11,679 |  | 13,009 |  |  |
Other Real Estate Owned [Member] |  |  |  |  |  |
Total at Fair Value | 10,378 | [1] | 14,282 | [2] |  |
Total Losses | 9 | [1] | 404 | [2] | 202 | [2]
Other Real Estate Owned [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Total at Fair Value |  | [1] |  | [2] |  |
Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Total at Fair Value | 6,006 | [1] | 10,047 | [2] |  |
Other Real Estate Owned [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Total at Fair Value | 4,372 | [1] | 4,235 | [2] |  |
Equity Investments [Member] |  |  |  |  |  |
Total at Fair Value | 3,667 |  | 4,922 |  |  |
Total Losses | 976 |  | 553 |  | $ 436 |
Equity Investments [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Equity Investments [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |
Equity Investments [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |
Total at Fair Value | $ 3,667 |  | $ 4,922 |  |  |
[1] | Other real estate owned balance of $20.1 million in the Consolidated Balance Sheets is net of estimated disposal costs.
[2] | Other real estate owned balance of $24.7 million in the Consolidated Balance Sheets is net of estimated disposal costs.

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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 nonrecurring 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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