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Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Impaired Loans - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2015
With no related allowance recorded: |  |  |
With no allowance recorded, recorded investment | $ 13,602,000 |  | $ 12,848,000
With no allowance recorded, unpaid principal balance | 15,580,000 |  | 14,834,000
With no allowance recorded, average recorded investment | 12,358,000 | $ 12,374,000 |
With no allowance recorded, interest income recognized | 127,000 | 131,000 |
With an allowance recorded: |  |  |
With allowance recorded, recorded investment | 2,979,000 |  | 3,000
With allowance recorded, unpaid principal balance | 2,979,000 |  | 3,000
Related allowance | 739,000 |  | 3,000
With allowance recorded, average recorded investment | 2,979,000 | 2,000 |
With allowance recorded, interest income recognized | 0 | 0 |
Recorded investment | 16,581,000 |  | 12,851,000
Unpaid principal balance | 18,559,000 |  | 14,837,000
Related allowance | 739,000 |  | 3,000
Average recorded investment | 15,337,000 | 12,376,000 |
Interest income recognized | 127,000 | 131,000 |
Commercial Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no allowance recorded, recorded investment | 0 |  | 0
With no allowance recorded, unpaid principal balance | 96,000 |  | 96,000
With no allowance recorded, average recorded investment | 0 | 1,000 |
With no allowance recorded, interest income recognized | 0 | 0 |
With an allowance recorded: |  |  |
With allowance recorded, recorded investment | 2,977,000 |  |
With allowance recorded, unpaid principal balance | 2,977,000 |  |
Related allowance | 737,000 |  |
With allowance recorded, average recorded investment | 2,977,000 | 0 |
With allowance recorded, interest income recognized | 0 | 0 |
Recorded investment | 2,977,000 |  |
Unpaid principal balance | 3,073,000 |  | 96,000
Related allowance | 737,000 |  |
Average recorded investment | 2,977,000 | 1,000 |
Interest income recognized | 0 | 0 |
Commercial Real Estate Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no allowance recorded, recorded investment | 8,521,000 |  | 7,745,000
With no allowance recorded, unpaid principal balance | 9,027,000 |  | 8,259,000
With no allowance recorded, average recorded investment | 7,270,000 | 8,296,000 |
With no allowance recorded, interest income recognized | 91,000 | 95,000 |
With an allowance recorded: |  |  |
With allowance recorded, recorded investment | 0 |  |
With allowance recorded, unpaid principal balance | 0 |  |
Related allowance | 0 |  | 0
With allowance recorded, average recorded investment | 0 | 0 |
With allowance recorded, interest income recognized | 0 | 0 |
Recorded investment | 8,521,000 |  | 7,745,000
Unpaid principal balance | 9,027,000 |  | 8,259,000
Related allowance | 0 |  | 0
Average recorded investment | 7,270,000 | 8,296,000 |
Interest income recognized | 91,000 | 95,000 |
Construction Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no allowance recorded, recorded investment | 0 |  | 0
With no allowance recorded, unpaid principal balance | 287,000 |  | 287,000
With an allowance recorded: |  |  |
With allowance recorded, recorded investment | 0 |  |
With allowance recorded, unpaid principal balance | 0 |  |
Related allowance | 0 |  | 0
Recorded investment | 0 |  | 0
Unpaid principal balance | 287,000 |  | 287,000
Related allowance | 0 |  | 0
Residential Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no allowance recorded, recorded investment | 4,535,000 |  | 4,556,000
With no allowance recorded, unpaid principal balance | 5,538,000 |  | 5,559,000
With no allowance recorded, average recorded investment | 4,542,000 | 3,525,000 |
With no allowance recorded, interest income recognized | 31,000 | 32,000 |
With an allowance recorded: |  |  |
With allowance recorded, recorded investment | 0 |  |
With allowance recorded, unpaid principal balance | 0 |  |
Related allowance | 0 |  | 0
With allowance recorded, average recorded investment | 0 | 0 |
With allowance recorded, interest income recognized | 0 | 0 |
Recorded investment | 4,535,000 |  | 4,556,000
Unpaid principal balance | 5,538,000 |  | 5,559,000
Related allowance | 0 |  | 0
Average recorded investment | 4,542,000 | 3,525,000 |
Interest income recognized | 31,000 | 32,000 |
Consumer Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no allowance recorded, recorded investment | 546,000 |  | 547,000
With no allowance recorded, unpaid principal balance | 632,000 |  | 633,000
With no allowance recorded, average recorded investment | 546,000 | 552,000 |
With no allowance recorded, interest income recognized | 5,000 | 4,000 |
With an allowance recorded: |  |  |
With allowance recorded, recorded investment | 2,000 |  | 3,000
With allowance recorded, unpaid principal balance | 2,000 |  | 3,000
Related allowance | 2,000 |  | 3,000
With allowance recorded, average recorded investment | 2,000 | 2,000 |
With allowance recorded, interest income recognized | 0 | 0 |
Recorded investment | 548,000 |  | 550,000
Unpaid principal balance | 634,000 |  | 636,000
Related allowance | 2,000 |  | 3,000
Average recorded investment | 548,000 | 554,000 |
Interest income recognized | 5,000 | $ 4,000 |
Other Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no allowance recorded, recorded investment | 0 |  |
With no allowance recorded, unpaid principal balance | $ 0 |  |
Construction to Permanent Portfolio Segment [Member] |  |  |
With no related allowance recorded: |  |  |
With no allowance recorded, recorded investment |  |  | 0
With no allowance recorded, unpaid principal balance |  |  | $ 0

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