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Note 4 - Credit Quality - Loans Modified as Troubled Debt Restructurings (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($)
Total contracts |  | 1 | 1 | 5 |  | 2 |
Pre-modification recorded investment |  | $ 33 | $ 11 | $ 742 |  | $ 52 |
Total below market interest rate | [1] | $ 29 | $ 11 | $ 727 |  | $ 52 |
Below Market Interest Rate [Member] |  |  |  |  |  |  |
Total contracts |  |  | 1 |  |  | 1 |
Pre-modification recorded investment |  |  | $ 11 |  |  | $ 11 |
Total below market interest rate |  |  | $ 11 |  | [1] | $ 11 | [1]
Below Market Interest Rate [Member] | Single Family Owner Occupied [Member] |  |  |  |  |  |  |
Total contracts |  |  | 1 |  |  | 1 |
Pre-modification recorded investment |  |  | $ 11 |  |  | $ 11 |
Total below market interest rate | [1] |  | $ 11 |  |  | $ 11 |
Below Market Interest Rate and Extended Payment Term [Member] |  |  |  |  |  |  |
Total contracts |  |  |  | 4 |  | 1 |
Pre-modification recorded investment |  |  |  | $ 709 |  | $ 41 |
Total below market interest rate | [1] |  |  | $ 698 |  | $ 41 |
Below Market Interest Rate and Extended Payment Term [Member] | Single Family Owner Occupied [Member] |  |  |  |  |  |  |
Total contracts |  |  |  | 2 |  | 1 |
Pre-modification recorded investment |  |  |  | $ 221 |  | $ 41 |
Total below market interest rate | [1] |  |  | $ 218 |  | $ 41 |
Below Market Interest Rate and Extended Payment Term [Member] | Single Family Non-owner Occupied [Member] |  |  |  |  |  |  |
Total contracts |  | 1 |  | 2 |  |  |
Pre-modification recorded investment |  | $ 33 |  | $ 488 |  |  |
Total below market interest rate | [1] | $ 29 |  | $ 480 |  |  |
Payment Deferral [Member] |  |  |  |  |  |  |
Total contracts |  | 1 | 0 | 1 |  |  |
Pre-modification recorded investment |  | $ 33 |  | $ 33 |  |  |
Total below market interest rate | [1] | $ 29 |  | $ 29 |  |  |
Payment Deferral [Member] | Single Family Owner Occupied [Member] |  |  |  |  |  |  |
Total contracts |  |  |  | 1 |  |  |
Pre-modification recorded investment |  |  |  | $ 33 |  |  |
Total below market interest rate |  |  |  | $ 29 |  |  |
Payment Deferral [Member] | Home Equity Lines [Member] |  |  |  |  |  |  |
Total contracts |  |  |  |  |  |  |
Pre-modification recorded investment |  |  |  |  |  |  |
Total below market interest rate | [1] |  |  |  |  |  |
[1] | Represents the loan balance immediately following modification

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- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
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- Definition Amount, after troubled debt restructuring, of modified financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524 + Details
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