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Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Impaired Loans, Average Investment and Interest Income Recognized, Prior Year (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | $ 17,567 | [1] | $ 17,889 | [1],[2] | $ 14,055 | [2] | $ 13,540 | [2],[3]
Interest Income Recognized | 39 |  | 77 |  | 186 |  | 9 |
Real Estate Construction [Member] | Construction residential [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 118 | [1] | 118 | [1] |  |  | 1,171 | [3]
Interest Income Recognized | 0 |  | 0 |  |  |  | 0 |
Real Estate Construction [Member] | Construction other [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 2,854 | [1] | 2,927 | [1] |  |  | 4,290 | [3]
Interest Income Recognized | 0 |  | 0 |  |  |  | 1 |
Consumer Real Estate [Member] | Equity Lines [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 0 | [1] | 0 | [1] |  |  | 101 | [3]
Interest Income Recognized | 0 |  | 0 |  |  |  | 0 |
Consumer Real Estate [Member] | Residential closed end first liens [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 530 | [1] | 534 | [1] |  |  | 873 | [3]
Interest Income Recognized | 1 |  | 2 |  |  |  | 2 |
Consumer Real Estate [Member] | Residential closed end junior liens [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 347 | [1] | 352 | [1] |  |  | 234 | [3]
Interest Income Recognized | 0 |  | 0 |  |  |  | 0 |
Commercial Real Estate Loans [Member] | Multifamily real estate [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 4,294 | [1] | 4,383 | [1] |  |  | 1,466 | [3]
Interest Income Recognized | 0 |  | 0 |  |  |  | 5 |
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 5,486 | [1] | 5,509 | [1] |  |  | 4,806 | [3]
Interest Income Recognized | 28 |  | 55 |  |  |  | 1 |
Commercial Real Estate Loans [Member] | Commercial real estate, other [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 3,516 | [1] | 3,516 | [1] |  |  | 0 | [3]
Interest Income Recognized | 8 |  | 16 |  |  |  | 0 |
Commercial Non Real Estate [Member] | Commercial and Industrial [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 310 | [1] | 429 | [1] |  |  | 570 | [3]
Interest Income Recognized | 1 |  | 1 |  |  |  | 0 |
Public Sector and IDA [Member] | Public Sector and IDA [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 0 | [1] | 0 | [1] |  |  | 0 | [3]
Interest Income Recognized | 0 |  | 0 |  |  |  | 0 |
Consumer Non Real Estate [Member] | Credit Card Receivable [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 0 | [1] | 0 | [1] |  |  | 0 | [3]
Interest Income Recognized | 0 |  | 0 |  |  |  | 0 |
Consumer Non Real Estate [Member] | Automobile [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 29 | [1] | 37 | [1] |  |  | 4 | [3]
Interest Income Recognized | 0 |  | 0 |  |  |  | 0 |
Consumer Non Real Estate [Member] | Other Consumer Loans [Member] |  |  |  |  |  |  |  |
Financing Receivable, Impaired [Line Items] |  |  |  |  |  |  |  |
Average Recorded Investment | 0 | [1] | 0 | [1] |  |  | 25 | [3]
Interest Income Recognized | $ 0 |  | $ 0 |  |  |  | $ 0 |
[1] | Recorded investment includes the unpaid principal balance and any accrued interest and net deferred fees.
[2] | Recorded investment includes principal, accrued interest and net deferred fees.
[3] | Recorded investment includes the unpaid principal balance and any accrued interest and deferred fees.

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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=28368275&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=28368275&loc=d3e5258-111524 + Details
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