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Note 15 - Accumulated Other Comprehensive Income - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
(Losses) gains recognized |  |  |  |  | $ 0 | $ 0 | $ 0 | $ 385 | $ 0 | $ 385 | $ (43)
Income before income taxes | $ 13,592 | $ 16,424 | $ 17,480 | $ 19,032 | 14,939 | 10,598 | 10,508 | 10,067 | 66,528 | 46,112 | 49,796
Income tax benefit | 3,037 | 3,816 | 4,077 | 4,430 | 3,389 | 2,332 | 2,270 | 2,195 | 15,360 | 10,186 | 10,994
Net income | $ 10,555 | $ 12,608 | $ 13,403 | $ 14,602 | $ 11,550 | $ 8,266 | $ 8,238 | $ 7,872 | 51,168 | 35,926 | 38,802
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |  |  |  |  |  |  |
(Losses) gains recognized |  |  |  |  |  |  |  |  | 0 | (385) | 43
Income tax benefit |  |  |  |  |  |  |  |  | 0 | 81 | (9)
Net income |  |  |  |  |  |  |  |  | 308 | 0 | 254
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] |  |  |  |  |  |  |  |  |  |  |
Income before income taxes |  |  |  |  |  |  |  |  | 0 | (385) | 43
Income tax benefit |  |  |  |  |  |  |  |  | (80) | (82) | (58)
Net income |  |  |  |  |  |  |  |  | 0 | (304) | 34
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |
Other operating expense |  |  |  |  |  |  |  |  | 124 | 201 | 257
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |
Other operating expense |  |  |  |  |  |  |  |  | 264 | 185 | 21
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |  |  |  |  |  |  |  |
Income before income taxes |  |  |  |  |  |  |  |  | 388 | 386 | 278
Net income |  |  |  |  |  |  |  |  | $ 308 | $ 304 | $ 220

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