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Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items] |  |  |  |  |  |  |  |
Average recorded investment | [1] | $ 15,543 | $ 11,898 | $ 15,543 | [2] | $ 11,898 | [2] | $ 16,311
Interest income recognized |  | $ 172 | $ 191 | 172 | [2] | 191 | [2] | 473
Consumer Real Estate Portfolio Segment [Member] | Closed-end First Liens [Member] |  |  |  |  |  |  |  |
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items] |  |  |  |  |  |  |  |
Average recorded investment |  |  |  | 499 | [1],[2] | 452 | [1],[2] | 555
Interest income recognized |  |  |  | 15 | [2] | 13 | [2] | 31
Consumer Real Estate Portfolio Segment [Member] | Closed-end Junior Liens [Member] |  |  |  |  |  |  |  |
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items] |  |  |  |  |  |  |  |
Average recorded investment |  |  |  | 233 | [1],[2] | 254 | [1],[2] | 249
Interest income recognized |  |  |  | 8 | [2] | 8 | [2] | 16
Consumer Real Estate Portfolio Segment [Member] | Investor-owned Residential Real Estate [Member] |  |  |  |  |  |  |  |
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items] |  |  |  |  |  |  |  |
Average recorded investment |  |  |  | 76 | [1],[2] | 81 | [1],[2] | 77
Interest income recognized |  |  |  | 2 | [2] | 2 | [2] | 5
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member] |  |  |  |  |  |  |  |
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items] |  |  |  |  |  |  |  |
Average recorded investment |  |  |  | $ 2,678 | [1],[2] | $ 2,821 | [1],[2] | 2,773
Interest income recognized | [2] |  |  |  |  |  |  |
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member] |  |  |  |  |  |  |  |
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items] |  |  |  |  |  |  |  |
Average recorded investment |  |  |  | $ 5,565 | [1],[2] | $ 5,032 | [1],[2] | 5,836
Interest income recognized |  |  |  | 57 | [2] | 77 | [2] | 203
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Other [Member] |  |  |  |  |  |  |  |
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items] |  |  |  |  |  |  |  |
Average recorded investment |  |  |  | 5,974 | [1],[2] | 3,140 | [1],[2] | 6,114
Interest income recognized |  |  |  | 86 | [2] | 89 | [2] | 175
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |  |  |  |
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items] |  |  |  |  |  |  |  |
Average recorded investment |  |  |  | 518 | [1],[2] | 95 | [1],[2] | 707
Interest income recognized |  |  |  | $ 4 | [2] | 2 | [2] | $ 43
Consumer Portfolio Segment [Member] | Automobile Loan [Member] |  |  |  |  |  |  |  |
Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized [Line Items] |  |  |  |  |  |  |  |
Average recorded investment | [1],[2] |  |  |  |  | $ 23 |  |
Interest income recognized | [2] |  |  |  |  |  |  |
[1] | Recorded investment is net of charge-offs and interest paid while a loan is in nonaccrual status.
[2] | Only classes with impaired loans are shown.

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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524 + Details
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