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Note Q - Parent Company Only Condensed Financial Information - Condensed Statements of Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Interest on subordinated debentures |  |  |  |  |  |  |  |  | $ 356 | $ 330 | $ 248
Income before income taxes and equity in undistributed earnings of subsidiaries.. |  |  |  |  |  |  |  |  | 11,720 | 14,199 | 11,995
Tax expense |  |  |  |  |  |  |  |  | 1,813 | 2,255 | 4,486
Net income | $ 3,498 | $ 2,137 | $ 3,079 | $ 1,193 | $ 3,856 | $ 1,746 | $ 2,976 | $ 3,366 | 9,907 | 11,944 | 7,509
Comprehensive Income |  |  |  |  |  |  |  |  | 12,570 | 10,860 | 7,622
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Interest on notes |  |  |  |  |  |  |  |  | 47 | 53 | 51
Dividends from subsidiaries |  |  |  |  |  |  |  |  | 4,375 | 4,225 | 4,400
Interest on notes |  |  |  |  |  |  |  |  | 139 | 185 | 211
Interest on subordinated debentures |  |  |  |  |  |  |  |  | 356 | 330 | 248
Operating expenses |  |  |  |  |  |  |  |  | 377 | 351 | 332
Income before income taxes and equity in undistributed earnings of subsidiaries.. |  |  |  |  |  |  |  |  | 3,550 | 3,412 | 3,660
Tax expense |  |  |  |  |  |  |  |  | 169 | 164 | 244
Equity in undistributed earnings of subsidiaries |  |  |  |  |  |  |  |  | 6,188 | 8,368 | 3,605
Net income |  |  |  |  |  |  |  |  | 9,907 | 11,944 | 7,509
Comprehensive Income |  |  |  |  |  |  |  |  | $ 12,570 | $ 10,860 | $ 7,622

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e557-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580 + Details
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