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Note 14 - 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, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Gain recognized |  | $ 0 | $ (43) | $ 385 | $ (43)
Income before income taxes |  | 10,508 | 13,402 | 20,575 | 25,663
Income tax expense |  | 2,270 | 2,951 | 4,465 | 5,581
Net income |  | 8,238 | 10,451 | 16,110 | 20,082
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |
Net income |  | 76 | 89 | (152) | 144
Reclassification out of Accumulated Other Comprehensive Income [Member] | AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] |  |  |  |  |
Gain recognized |  | 0 | 43 | (385) | 43
Income before income taxes |  | 0 | 43 | (385) | 43
Income tax expense |  | 0 | 9 | (81) | 9
Net income |  | 0 | 34 | (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 | [1] | 50 | 64 | 100 | 128
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member] |  |  |  |  |
Other operating expense | [1] | 47 | 6 | 93 | 11
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |  |
Income before income taxes |  | 97 | 70 | 193 | 139
Income tax expense |  | 21 | 15 | 41 | 29
Net income |  | $ 76 | $ 55 | $ 152 | $ 110
[1] | Amortization is included in net periodic pension cost. See Note 11, "Employee Benefit Plans."

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