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Note 15 - Accumulated Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2024
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Unrealized Gains (Losses) on Available for-Sale Securities |  |  | Employee Benefit Plans |  |  | Total |
(Amounts in thousands) |  |  |  |  |  |  |  |  |  |  |  |
Balance January 1, 2022 |  | $ | 15 |  |  | $ | (1,561 | ) |  | $ | (1,546 | )
Other comprehensive (loss) income before reclassifications |  |  | (15,636 | ) |  |  | 1,357 |  |  |  | (14,279 | )
Reclassified from AOCI |  |  | — |  |  |  | 106 |  |  |  | 106 |
Other comprehensive (loss) income, net |  |  | (15,636 | ) |  |  | 1,463 |  |  |  | (14,173 | )
Balance December 31, 2022 |  | $ | (15,621 | ) |  | $ | (98 | ) |  | $ | (15,719 | )
Balance January 1, 2023 |  | $ | (15,621 | ) |  | $ | (98 | ) |  | $ | (15,719 | )
Other comprehensive income before reclassifications |  |  | 4,479 |  |  |  | 242 |  |  |  | 4,721 |
Reclassified from AOCI |  |  | 16 |  |  |  | 31 |  |  |  | 47 |
Other comprehensive income, net |  |  | 4,495 |  |  |  | 273 |  |  |  | 4,768 |
Balance December 31, 2023 |  | $ | (11,126 | ) |  | $ | 175 |  |  | $ | (10,951 | )
Balance January 1, 2024 |  | $ | (11,126 | ) |  | $ | 175 |  |  | $ | (10,951 | )
Other comprehensive (loss) income before reclassifications |  |  | (596 | ) |  |  | 347 |  |  |  | (249 | )
Reclassified from AOCI |  |  | — |  |  |  | 29 |  |  |  | 29 |
Other comprehensive (loss) income, net |  |  | (596 | ) |  |  | 376 |  |  |  | (220 | )
Balance December 31, 2024 |  | $ | (11,722 | ) |  | $ | 551 |  |  | $ | (11,171 | )
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] |
|  | Year Ended December 31, |  | Income Statement
(Amounts in thousands) |  | 2024 |  |  | 2023 |  |  | 2022 |  | Line Item Affected
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |  |
Loss recognized |  | $ | — |  |  | $ | 21 |  |  | $ | — |  | Net loss on sale of securities
Reclassified out of AOCI, before tax |  |  | — |  |  |  | 21 |  |  |  | — |  | Income before income taxes
Income tax benefit |  |  | — |  |  |  | (5 | ) |  |  | — |  | Income tax expense
Reclassified out of AOCI, net of tax |  |  | — |  |  |  | 16 |  |  |  | — |  | Net income
Employee benefit plans |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of prior service cost |  |  | — |  |  |  | — |  |  |  | — |  | Other operating expense
Amortization of net actuarial loss |  |  | 37 |  |  |  | 38 |  |  |  | 135 |  | Other operating expense
Reclassified out of AOCI, before tax |  |  | 37 |  |  |  | 38 |  |  |  | 135 |  | Income before income taxes
Income tax benefit |  |  | (8 | ) |  |  | (7 | ) |  |  | (29 | ) | Income tax expense
Reclassified out of AOCI, net of tax |  |  | 29 |  |  |  | 31 |  |  |  | 106 |  | Net income
Total reclassified out of AOCI, net of tax |  | $ | 29 |  |  | $ | 47 |  |  | $ | 106 |  | Net income

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