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Note 15 - Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Balance | $ 675,869 |  |
Balance | 760,432 | $ 675,869 |
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |  |
Balance | (7,657) | 9,309 | $ 1,085
Net current period other comprehensive income (loss) | (107,991) | (16,966) | 8,224
Balance | (115,648) | (7,657) | 9,309
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] |  |  |
Balance | 0 | (121) | (39)
Net current period other comprehensive income (loss) | 0 | 121 | (82)
Balance | 0 | 0 | (121)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |
Balance | (283) | (447) | (369)
Net current period other comprehensive income (loss) | 395 | 164 | (78)
Balance | 112 | (283) | (447)
AOCI Attributable to Parent [Member] |  |  |
Balance | (7,940) | 8,741 | 677
Net current period other comprehensive income (loss) | (107,596) | (16,681) | 8,064
Balance | $ (115,536) | $ (7,940) | $ 8,741

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- Definition Amount after tax, before reclassification adjustments, of other comprehensive income (loss), attributable to parent. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI https://asc.fasb.org/extlink&oid=124507222&loc=d3e1436-108581 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580 + Details
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