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Note 4 - Loans and Allowance for Loan Losses - Impaired Loans (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Originated Loan [Member] |  |
With no related allowance recorded, unpaid principal balance | $ 10,391,000 | $ 10,990,000
With no related allowance recorded, principal balance | 9,723,000 | 10,306,000
With no related allowance recorded, average recorded principal balance | 13,333,000 | 4,598,000
With related allowance recorded, unpaid principal balance | 1,657,000 | 8,660,000
With related allowance recorded, principal balance | 1,642,000 | 8,576,000
Related allowance | 1,397,000 | 688,000
With related allowance recorded, average recorded principal balance | 7,843,000 | 6,538,000
Total unpaid principal balance | 12,048,000 | 19,650,000
Total principal balance | 11,365,000 | 18,882,000
Total average recorded principal balance | 21,176,000 | 11,136,000
Originated Loan [Member] | Commercial Portfolio Segment [Member] |  |
With no related allowance recorded, unpaid principal balance | 8,566,000 | 9,330,000
With no related allowance recorded, principal balance | 8,518,000 | 9,330,000
With no related allowance recorded, average recorded principal balance | 12,266,000 | 3,493,000
With related allowance recorded, unpaid principal balance | 1,310,000 | 7,809,000
With related allowance recorded, principal balance | 1,310,000 | 7,804,000
Related allowance | 1,150,000 | 451,000
With related allowance recorded, average recorded principal balance | 7,193,000 | 5,639,000
Total unpaid principal balance | 9,876,000 | 17,139,000
Total principal balance | 9,828,000 | 17,134,000
Total average recorded principal balance | 19,459,000 | 9,132,000
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
With no related allowance recorded, unpaid principal balance | 7,826,000 | 8,604,000
With no related allowance recorded, principal balance | 7,826,000 | 8,604,000
With no related allowance recorded, average recorded principal balance | 11,259,000 | 2,096,000
With related allowance recorded, unpaid principal balance | 332,000 | 5,011,000
With related allowance recorded, principal balance | 332,000 | 5,011,000
Related allowance | 172,000 | 83,000
With related allowance recorded, average recorded principal balance | 5,567,000 | 3,455,000
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
With no related allowance recorded, unpaid principal balance | 85,000 | 94,000
With no related allowance recorded, principal balance | 85,000 | 94,000
With no related allowance recorded, average recorded principal balance | 89,000 | 65,000
With related allowance recorded, unpaid principal balance | 0 | 0
With related allowance recorded, principal balance | 0 | 0
Related allowance | 0 | 0
With related allowance recorded, average recorded principal balance | 0 | 0
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
With no related allowance recorded, unpaid principal balance | 655,000 | 632,000
With no related allowance recorded, principal balance | 607,000 | 632,000
With no related allowance recorded, average recorded principal balance | 893,000 | 1,145,000
With related allowance recorded, unpaid principal balance | 978,000 | 2,658,000
With related allowance recorded, principal balance | 978,000 | 2,658,000
Related allowance | 978,000 | 363,000
With related allowance recorded, average recorded principal balance | 1,573,000 | 2,072,000
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
With no related allowance recorded, unpaid principal balance | 0 | 0
With no related allowance recorded, principal balance | 0 | 0
With no related allowance recorded, average recorded principal balance | 0 | 0
With related allowance recorded, unpaid principal balance | 0 | 0
With related allowance recorded, principal balance | 0 | 0
Related allowance | 0 | 0
With related allowance recorded, average recorded principal balance | 0 | 0
Originated Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
With no related allowance recorded, unpaid principal balance | 0 | 0
With no related allowance recorded, principal balance | 0 | 0
With no related allowance recorded, average recorded principal balance | 25,000 | 187,000
With related allowance recorded, unpaid principal balance | 0 | 140,000
With related allowance recorded, principal balance | 0 | 135,000
Related allowance | 0 | 5,000
With related allowance recorded, average recorded principal balance | 53,000 | 112,000
Originated Loan [Member] | Retail Portfolio Segment [Member] |  |
With no related allowance recorded, unpaid principal balance | 1,825,000 | 1,660,000
With no related allowance recorded, principal balance | 1,205,000 | 976,000
With no related allowance recorded, average recorded principal balance | 1,067,000 | 1,105,000
With related allowance recorded, unpaid principal balance | 347,000 | 851,000
With related allowance recorded, principal balance | 332,000 | 772,000
Related allowance | 247,000 | 237,000
With related allowance recorded, average recorded principal balance | 650,000 | 899,000
Total unpaid principal balance | 2,172,000 | 2,511,000
Total principal balance | 1,537,000 | 1,748,000
Total average recorded principal balance | 1,717,000 | 2,004,000
Originated Loan [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |
With no related allowance recorded, unpaid principal balance | 708,000 | 607,000
With no related allowance recorded, principal balance | 691,000 | 586,000
With no related allowance recorded, average recorded principal balance | 682,000 | 691,000
With related allowance recorded, unpaid principal balance | 347,000 | 442,000
With related allowance recorded, principal balance | 332,000 | 431,000
Related allowance | 247,000 | 193,000
With related allowance recorded, average recorded principal balance | 383,000 | 600,000
Originated Loan [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |
With no related allowance recorded, unpaid principal balance | 1,117,000 | 1,053,000
With no related allowance recorded, principal balance | 514,000 | 390,000
With no related allowance recorded, average recorded principal balance | 385,000 | 414,000
With related allowance recorded, unpaid principal balance | 0 | 409,000
With related allowance recorded, principal balance | 0 | 341,000
Related allowance | 0 | 44,000
With related allowance recorded, average recorded principal balance | 267,000 | 299,000
Acquired Loan [Member] |  |
With no related allowance recorded, unpaid principal balance | 3,296,000 | 4,518,000
With no related allowance recorded, principal balance | 2,522,000 | 3,827,000
With no related allowance recorded, average recorded principal balance | 3,342,000 | 4,340,000
With related allowance recorded, unpaid principal balance | 741,000 | 1,415,000
With related allowance recorded, principal balance | 735,000 | 1,337,000
Related allowance | 226,000 | 310,000
With related allowance recorded, average recorded principal balance | 990,000 | 594,000
Total unpaid principal balance | 4,037,000 | 5,933,000
Total principal balance | 3,257,000 | 5,164,000
Total average recorded principal balance | 4,332,000 | 4,934,000
Acquired Loan [Member] | Commercial Portfolio Segment [Member] |  |
With no related allowance recorded, unpaid principal balance | 570,000 | 1,636,000
With no related allowance recorded, principal balance | 550,000 | 1,617,000
With no related allowance recorded, average recorded principal balance | 1,128,000 | 1,694,000
With related allowance recorded, unpaid principal balance | 228,000 | 535,000
With related allowance recorded, principal balance | 226,000 | 526,000
Related allowance | 34,000 | 43,000
With related allowance recorded, average recorded principal balance | 322,000 | 425,000
Total unpaid principal balance | 798,000 | 2,171,000
Total principal balance | 776,000 | 2,143,000
Total average recorded principal balance | 1,450,000 | 2,119,000
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |
With no related allowance recorded, unpaid principal balance | 303,000 | 398,000
With no related allowance recorded, principal balance | 303,000 | 398,000
With no related allowance recorded, average recorded principal balance | 351,000 | 690,000
With related allowance recorded, unpaid principal balance | 128,000 | 175,000
With related allowance recorded, principal balance | 126,000 | 166,000
Related allowance | 30,000 | 43,000
With related allowance recorded, average recorded principal balance | 142,000 | 33,000
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |
With no related allowance recorded, unpaid principal balance | 0 | 0
With no related allowance recorded, principal balance | 0 | 0
With no related allowance recorded, average recorded principal balance | 0 | 0
With related allowance recorded, unpaid principal balance | 0 | 0
With related allowance recorded, principal balance | 0 | 0
Related allowance | 0 | 0
With related allowance recorded, average recorded principal balance | 0 | 0
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |
With no related allowance recorded, unpaid principal balance | 60,000 | 1,193,000
With no related allowance recorded, principal balance | 60,000 | 1,193,000
With no related allowance recorded, average recorded principal balance | 627,000 | 749,000
With related allowance recorded, unpaid principal balance | 100,000 | 147,000
With related allowance recorded, principal balance | 100,000 | 147,000
Related allowance | 4,000 | 0
With related allowance recorded, average recorded principal balance | 99,000 | 349,000
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |
With no related allowance recorded, unpaid principal balance | 178,000 | 0
With no related allowance recorded, principal balance | 178,000 | 0
With no related allowance recorded, average recorded principal balance | 131,000 | 182,000
With related allowance recorded, unpaid principal balance | 0 | 210,000
With related allowance recorded, principal balance | 0 | 210,000
Related allowance | 0 | 0
With related allowance recorded, average recorded principal balance | 80,000 | 42,000
Acquired Loan [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |
With no related allowance recorded, unpaid principal balance | 29,000 | 45,000
With no related allowance recorded, principal balance | 9,000 | 26,000
With no related allowance recorded, average recorded principal balance | 19,000 | 73,000
With related allowance recorded, unpaid principal balance | 0 | 3,000
With related allowance recorded, principal balance | 0 | 3,000
Related allowance | 0 | 0
With related allowance recorded, average recorded principal balance | 1,000 | 1,000
Acquired Loan [Member] | Retail Portfolio Segment [Member] |  |
With no related allowance recorded, unpaid principal balance | 2,726,000 | 2,882,000
With no related allowance recorded, principal balance | 1,972,000 | 2,210,000
With no related allowance recorded, average recorded principal balance | 2,214,000 | 2,646,000
With related allowance recorded, unpaid principal balance | 513,000 | 880,000
With related allowance recorded, principal balance | 509,000 | 811,000
Related allowance | 192,000 | 267,000
With related allowance recorded, average recorded principal balance | 668,000 | 169,000
Total unpaid principal balance | 3,239,000 | 3,762,000
Total principal balance | 2,481,000 | 3,021,000
Total average recorded principal balance | 2,882,000 | 2,815,000
Acquired Loan [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |
With no related allowance recorded, unpaid principal balance | 571,000 | 388,000
With no related allowance recorded, principal balance | 518,000 | 361,000
With no related allowance recorded, average recorded principal balance | 521,000 | 615,000
With related allowance recorded, unpaid principal balance | 155,000 | 462,000
With related allowance recorded, principal balance | 153,000 | 440,000
Related allowance | 109,000 | 178,000
With related allowance recorded, average recorded principal balance | 275,000 | 95,000
Acquired Loan [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |
With no related allowance recorded, unpaid principal balance | 2,155,000 | 2,494,000
With no related allowance recorded, principal balance | 1,454,000 | 1,849,000
With no related allowance recorded, average recorded principal balance | 1,693,000 | 2,031,000
With related allowance recorded, unpaid principal balance | 358,000 | 418,000
With related allowance recorded, principal balance | 356,000 | 371,000
Related allowance | 83,000 | 89,000
With related allowance recorded, average recorded principal balance | $ 393,000 | $ 74,000

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5212-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5258-111524 + Details
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