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Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Impaired Loans - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014
With no related allowance recorded: |  |  |  |  |
With no related allowance recorded - recorded investment | $ 11,724,000 |  | $ 11,724,000 |  | $ 11,717,000
With no related allowance recorded - unpaid principal balance | 12,745,000 |  | 12,745,000 |  | 13,511,000
With no related allowance recorded - average recorded investment | 11,838,000 | $ 14,310,000 | 12,060,000 | $ 14,294,000 |
With no related allowance recorded - interest income recognized | 129,000 | 141,000 | 389,000 | 377,000 |
With an allowance recorded: |  |  |  |  |
With related allowance recorded - recorded investment | 3,000 |  | 3,000 |  | 7,000
With related allowance recorded - unpaid principal balance | 3,000 |  | 3,000 |  | 7,000
With related allowance recorded - Related allowance | 3,000 |  | 3,000 |  | 7,000
With related allowance recorded - average recorded investment | 1,000 | 7,202,000 | 1,000 | 7,344,000 |
Impaired loans | 11,727,000 |  | 11,727,000 |  | 11,724,000
Unpaid principal balance | 12,748,000 |  | 12,748,000 |  | 13,518,000
Related allowance | 3,000 |  | 3,000 |  | 7,000
Average recorded investment | 11,839,000 | 21,512,000 | 12,061,000 | 21,638,000 |
Interest income recognized | 129,000 | 141,000 | 389,000 | 377,000 |
Commercial Portfolio Segment [Member] |  |  |  |  |
With no related allowance recorded: |  |  |  |  |
With no related allowance recorded - recorded investment |  |  |  |  | 2,000
With no related allowance recorded - unpaid principal balance | 97,000 |  | 97,000 |  | 104,000
With no related allowance recorded - average recorded investment |  | 434,000 |  | 286,000 |
With an allowance recorded: |  |  |  |  |
With related allowance recorded - average recorded investment |  | 5,872,000 |  | 5,989,000 |
Impaired loans |  |  |  |  | 2,000
Unpaid principal balance | 97,000 |  | 97,000 |  | 104,000
Average recorded investment |  | 6,306,000 |  | 6,275,000 |
Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |
With no related allowance recorded: |  |  |  |  |
With no related allowance recorded - recorded investment | 7,809,000 |  | 7,809,000 |  | 7,398,000
With no related allowance recorded - unpaid principal balance | 8,332,000 |  | 8,332,000 |  | 8,249,000
With no related allowance recorded - average recorded investment | 7,916,000 | 8,493,000 | 8,079,000 | 8,365,000 |
With no related allowance recorded - interest income recognized | 94,000 | 104,000 | 281,000 | 261,000 |
With an allowance recorded: |  |  |  |  |
With related allowance recorded - average recorded investment |  | 1,073,000 |  | 772,000 |
Impaired loans | 7,809,000 |  | 7,809,000 |  | 7,398,000
Unpaid principal balance | 8,332,000 |  | 8,332,000 |  | 8,249,000
Average recorded investment | 7,916,000 | 9,566,000 | 8,079,000 | 9,137,000 |
Interest income recognized | 94,000 | 104,000 | 281,000 | 261,000 |
Construction Portfolio Segment [Member] |  |  |  |  |
With no related allowance recorded: |  |  |  |  |
With no related allowance recorded - unpaid principal balance | 287,000 |  | 287,000 |  | 732,000
With no related allowance recorded - average recorded investment |  |  |  | 263,000 |
With an allowance recorded: |  |  |  |  |
With related allowance recorded - average recorded investment |  |  |  | 144,000 |
Unpaid principal balance | 287,000 |  | 287,000 |  | 732,000
Average recorded investment |  |  |  | 407,000 |
Residential Portfolio Segment [Member] |  |  |  |  |
With no related allowance recorded: |  |  |  |  |
With no related allowance recorded - recorded investment | 3,366,000 |  | 3,366,000 |  | 3,764,000
With no related allowance recorded - unpaid principal balance | 3,394,000 |  | 3,394,000 |  | 3,793,000
With no related allowance recorded - average recorded investment | 3,373,000 | 4,810,000 | 3,430,000 | 4,798,000 |
With no related allowance recorded - interest income recognized | 31,000 | 32,000 | 95,000 | 97,000 |
With an allowance recorded: |  |  |  |  |
With related allowance recorded - average recorded investment |  | 253,000 |  | 436,000 |
Impaired loans | 3,366,000 |  | 3,366,000 |  | 3,764,000
Unpaid principal balance | 3,394,000 |  | 3,394,000 |  | 3,793,000
Average recorded investment | 3,373,000 | 5,063,000 | 3,430,000 | 5,234,000 |
Interest income recognized | 31,000 | 32,000 | 95,000 | 97,000 |
Consumer Portfolio Segment [Member] |  |  |  |  |
With no related allowance recorded: |  |  |  |  |
With no related allowance recorded - recorded investment | 549,000 |  | 549,000 |  | 553,000
With no related allowance recorded - unpaid principal balance | 635,000 |  | 635,000 |  | 633,000
With no related allowance recorded - average recorded investment | 549,000 | 573,000 | 551,000 | 582,000 |
With no related allowance recorded - interest income recognized | 4,000 | 5,000 | 13,000 | 19,000 |
With an allowance recorded: |  |  |  |  |
With related allowance recorded - recorded investment | 3,000 |  | 3,000 |  | 7,000
With related allowance recorded - unpaid principal balance | 3,000 |  | 3,000 |  | 7,000
With related allowance recorded - Related allowance | 3,000 |  | 3,000 |  | 7,000
With related allowance recorded - average recorded investment | 1,000 | 4,000 | 1,000 | 3,000 |
Impaired loans | 552,000 |  | 552,000 |  | 560,000
Unpaid principal balance | 638,000 |  | 638,000 |  | 640,000
Related allowance | 3,000 |  | 3,000 |  | $ 7,000
Average recorded investment | 550,000 | 577,000 | 552,000 | 585,000 |
Interest income recognized | $ 4,000 | $ 5,000 | $ 13,000 | $ 19,000 |

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