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Note 2 - Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Investment securities gains on sale, net | [1] |  |  |  |  |  |  |  |  | $ 0 | $ 194,000
Gain on equity securities | [1] |  |  |  |  |  |  |  |  | (101,000) | 94,000
Earnings on bank-owned life insurance | [1] |  |  |  |  |  |  |  |  | 427,000 | 431,000
Gain on sale of loans | [1] |  |  |  |  |  |  |  |  | 1,487,000 | 433,000
Revenue from investment services | [2] |  |  |  |  |  |  |  |  | 526,000 | 528,000
Other income |  |  |  |  |  |  |  |  |  | 1,112,000 | 975,000
Total noninterest income |  | $ 1,610,000 | $ 1,811,000 | $ 1,495,000 | $ 1,074,000 | $ 1,305,000 | $ 1,105,000 | $ 1,299,000 | $ 1,132,000 | 5,990,000 | 4,841,000
Net gain on other real estate owned |  |  |  |  |  |  |  |  |  | (253,000) | (123,000)
Overdraft Fees [Member] |  |  |  |  |  |  |  |  |  |  |
Noninterest income revenue |  |  |  |  |  |  |  |  |  | 665,000 | 841,000
ATM Banking Fees [Member] |  |  |  |  |  |  |  |  |  |  |
Noninterest income revenue |  |  |  |  |  |  |  |  |  | 1,061,000 | 932,000
Service Charge and Other Fees [Member] |  |  |  |  |  |  |  |  |  |  |
Noninterest income revenue |  |  |  |  |  |  |  |  |  | $ 813,000 | $ 413,000
[1] | Not within scope of ASC 606
[2] | From services offered by the Company through it's servicing partnership with LPL Financial

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- Definition Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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- Definition The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.3(a)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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- Definition The total amount of noninterest income which may be derived from: (1) fees and commissions; (2) premiums earned; (3) insurance policy charges; (4) the sale or disposal of assets; and (5) other sources not otherwise specified. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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