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Note 13 - Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Unrealized Gains (Losses) On Securities |  |  | Changes in fair value of derivative contracts designated as hedge transactions |  |  | Adjustments For Pension Plans |  |  | Total Accumulated Other Comprehensive Loss, Net |
Balance January 1, 2019 |  | $ | (13 | ) |  | $ | (8,784 | ) |  | $ | (33,672 | ) |  |  | (42,469 | )
2019 change |  |  | — |  |  |  | 8,436 |  |  |  | (3,277 | ) |  |  | 5,159 |
Balance December 31, 2019 |  |  | (13 | ) |  |  | (348 | ) |  |  | (36,949 | ) |  |  | (37,310 | )
2020 change |  |  | — |  |  |  | 7,980 |  |  |  | (3,559 | ) |  |  | 4,421 |
Balance December 31, 2020 |  |  | (13 | ) |  |  | 7,632 |  |  |  | (40,508 | ) |  |  | (32,889 | )
2021 change |  |  | — |  |  |  | (12,307 | ) |  |  | 16,740 |  |  |  | 4,433 |
Balance December 31, 2021 |  | $ | (13 | ) |  | $ | (4,675 | ) |  | $ | (23,768 | ) |  | $ | (28,456 | )
|  | Income Tax Effect of: |
|  | Unrealized Gains (Losses) On Securities |  |  | Changes in fair value of derivative contracts designated as hedge transactions |  |  | Adjustments For Pension Plans |  |  | Total Accumulated Other Comprehensive Loss, Net |
Balance January 1, 2019 |  | $ | — |  |  | $ | — |  |  | $ | 12,575 |  |  | $ | 12,575 |
2019 change |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Balance December 31, 2019 |  |  | — |  |  |  | — |  |  |  | 12,575 |  |  |  | 12,575 |
2020 change |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Balance December 31, 2020 |  |  | — |  |  |  | — |  |  |  | 12,575 |  |  |  | 12,575 |
2021 change |  |  | — |  |  |  | 4,689 |  |  |  | (6,379 | ) |  |  | (1,690 | )
Balance December 31, 2021 |  | $ | — |  |  | $ | 4,689 |  |  | $ | 6,196 |  |  | $ | 10,885 |

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