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Note 16 - Accumulated Other Comprehensive Income - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 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 | Dec. 31, 2018
(Losses) gains recognized | $ 0 | $ 0 | $ 0 | $ 385 | $ 0 | $ 0 | $ (43) | $ 0 | $ 385 | $ (43) | $ (618)
Income before income taxes | 14,939 | 10,598 | 10,508 | 10,067 | 12,397 | 11,736 | 13,402 | 12,261 | 46,112 | 49,796 | 45,122
Income tax benefit | 3,389 | 2,332 | 2,270 | 2,195 | 2,833 | 2,580 | 2,951 | 2,630 | 10,186 | 10,994 | 8,782
Net income | $ 11,550 | $ 8,266 | $ 8,238 | $ 7,872 | $ 9,564 | $ 9,156 | $ 10,451 | $ 9,631 | 35,926 | 38,802 | 36,340
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |  |  |  |  |  |
(Losses) gains recognized |  |  |  |  |  |  |  |  | (385) | 43 | 618
Income tax benefit |  |  |  |  |  |  |  |  | 81 | (9) | (130)
Net income |  |  |  |  |  |  |  |  | 0 | 254 | 713
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] |  |  |  |  |  |  |  |  |  |  |
Income before income taxes |  |  |  |  |  |  |  |  | (385) | 43 | 618
Income tax benefit |  |  |  |  |  |  |  |  | (82) | (58) | (60)
Net income |  |  |  |  |  |  |  |  | (304) | 34 | 488
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |
Other operating expense |  |  |  |  |  |  |  |  | 201 | 257 | 228
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |
Other operating expense |  |  |  |  |  |  |  |  | 185 | 21 | 57
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |
Income before income taxes |  |  |  |  |  |  |  |  | 386 | 278 | 285
Net income |  |  |  |  |  |  |  |  | $ 304 | $ 220 | $ 225

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