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Note 16 - Income Taxes - Reconciliation From Federal Income Tax Statutory Rates to Income Before Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Income tax at statutory federal rate, amount | $ 58,585 | $ 51,363 | $ 64,796
Income tax at statutory federal rate, pre-tax earnings | 21.00% | 21.00% | 21.00%
State income tax, net of federal tax effect, amount | $ 1,787 | $ 3,339 | $ 7,247
State income tax, net of federal tax effect, pre-tax earnings | 0.64% | 1.37% | 2.35%
Tax-exempt income, net of expenses, amount | $ (14) | $ (92) | $ (188)
Tax-exempt income, net of expenses, pre-tax earnings | (0.01%) | (0.04%) | (0.06%)
Bank-owned life insurance contracts, amount | $ (2,002) | $ (1,591) | $ (1,812)
Bank-owned life insurance contracts, pre-tax earnings | (0.72%) | (0.65%) | (0.59%)
Excess tax benefit from stock compensation, amount | $ (1,117) | $ (1,242) | $ (1,091)
Excess tax benefit from stock compensation, pre-tax earnings | (0.40%) | (0.51%) | (0.35%)
Federal tax credits, net of related amortization, amount | $ (6,297) | $ (16,002) | $ (11,131)
Federal tax credits, net of related amortization, pre-tax earnings | (2.26%) | (6.54%) | (3.61%)
Other, amount | $ 798 | $ 1,960 | $ (497)
Other, pre-tax earnings | 0.36% | 0.80% | (0.16%)
Total income tax expense | $ 51,740 | $ 37,735 | $ 57,324
Effective income tax and rate, pre-tax earnings | 18.61% | 15.43% | 18.58%

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- Definition Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying statutory federal (national) tax rate to pretax income (loss) from continuing operation attributable to other reconciling item. Excludes state and local income tax expense (benefit), federal tax expense (benefit), statutory income tax expense (benefit) outside of country of domicile, tax credit, nondeductible expense, deduction, income tax settlement, income tax contingency, and cross-border tax law. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-12 + Details
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