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Note 12 - Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Gain recognized | $ 0 | $ 0 | $ 0 | $ 385
Income before income taxes | 17,480 | 10,508 | 36,512 | 20,575
Income tax expense | 4,077 | 2,270 | 8,507 | 4,465
Net income | 13,403 | 8,238 | 28,005 | 16,110
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Gain recognized | 0 | 0 | 0 | (385)
Net income | 76 | 76 | 152 | (152)
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] |  |  |  |
Income before income taxes | 0 | 0 | 0 | (385)
Income tax expense | 0 | 0 | 0 | (81)
Net income | 0 | 0 | 0 | (304)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] |  |  |  |
Other operating expense | 31 | 50 | 61 | 100
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] |  |  |  |
Other operating expense | 66 | 47 | 132 | 93
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |
Income before income taxes | 97 | 97 | 193 | 193
Income tax expense | 21 | 21 | 41 | 41
Net income | $ 76 | $ 76 | $ 152 | $ 152

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