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Note 11 - Fair Value Measurements - Financial Assets and Liabilities Measured On a Non-recurring Basis (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014
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 | 1,897 |  |  | 1,897 |  |  | 6,317 |
Impaired Loans [Member] | Commercial Portfolio Segment [Member] |  |  |  |  |  |  |  |
Total at Fair Value | 1,897 |  |  | 1,897 |  |  | 6,317 |
Total Losses |  |  | $ 575 |  |  | $ 3,380 | 806 | $ 17
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 | 9,041 |  |  | 9,041 |  |  | 20,359 |
Impaired Loans [Member] | Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |  |  |  |
Total at Fair Value | 9,041 |  |  | 9,041 |  |  | 20,359 |
Total Losses |  |  |  |  |  | 654 | 598 | 3,914
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 | 13,139 |  |  | 13,139 |  |  | 13,009 |
Impaired Loans [Member] | Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |  |  |  |  |  |  |
Total at Fair Value | 13,139 |  |  | 13,139 |  |  | 13,009 |
Total Losses |  |  |  |  |  | 146 | 146 | 27
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 | 24,077 |  |  | 24,077 |  |  | 39,685 |
Impaired Loans [Member] |  |  |  |  |  |  |  |
Total at Fair Value | 24,077 |  |  | 24,077 |  |  | 39,685 |
Total Losses |  |  | 575 |  |  | 4,180 | 1,550 | 3,958
Other Real Estate Owned [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |  |  |
Total at Fair Value |  | [1] |  |  | [1] |  |  |
Other Real Estate Owned [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |  |  |
Total at Fair Value | 3,095 | [1] |  | 3,095 | [1] |  | 10,047 |
Other Real Estate Owned [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |  |  |
Total at Fair Value | 4,372 | [1] |  | 4,372 | [1] |  | 4,235 |
Other Real Estate Owned [Member] |  |  |  |  |  |  |  |
Total at Fair Value | 7,467 | [1] |  | 7,467 | [1] |  | 14,282 |
Total Losses | (206) |  | 179 | 9 |  | 404 | 404 | 202
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 | 4,291 |  |  | 4,291 |  |  | 4,922 |
Equity Investments [Member] |  |  |  |  |  |  |  |
Total at Fair Value | 4,291 |  |  | 4,291 |  |  | 4,922 |
Total Losses | 187 |  | 81 | 419 |  | 408 | 553 | 436
Fair Value, Inputs, Level 1 [Member] |  |  |  |  |  |  |  |
Total at Fair Value |  |  |  |  |  |  |  |
Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |  |  |
Total at Fair Value | 3,095 |  |  | 3,095 |  |  | 10,047 |
Fair Value, Inputs, Level 3 [Member] |  |  |  |  |  |  |  |
Total at Fair Value | 32,740 |  |  | 32,740 |  |  | 48,842 |
Total at Fair Value | 35,835 |  |  | 35,835 |  |  | 58,889 |
Total Losses | $ (19) |  | $ 835 | $ 428 |  | $ 4,992 | $ 2,507 | $ 4,596
[1] | Other real estate owned balance of $21.0 million in the condensed consolidated balance sheet is net of estimated disposal costs.

X
- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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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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- Details
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- Details
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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