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Note 16 - Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
|  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
|  | (In Thousands) |
Current tax expense: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | 35,124 |  |  | $ | 56,318 |  |  | $ | 45,248 |
State |  |  | 3,616 |  |  |  | 3,621 |  |  |  | 5,428 |
Total current tax expense |  |  | 38,740 |  |  |  | 59,939 |  |  |  | 50,676 |
Deferred tax (benefit) expense: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | (1,057 | ) |  |  | (4,110 | ) |  |  | (5,596 | )
State |  |  | 52 |  |  |  | 1,495 |  |  |  | 535 |
Total deferred tax (benefit) |  |  | (1,005 | ) |  |  | (2,615 | ) |  |  | (5,061 | )
Total income tax expense |  | $ | 37,735 |  |  | $ | 57,324 |  |  | $ | 45,615 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Year Ended December 31, 2023 |
|  | Amount |  |  | % of Pre-tax Earnings |
|  | (In Thousands) |
Income tax at statutory federal rate |  | $ | 51,363 |  |  |  | 21.00 | %
Effect on rate of: |  |  |  |  |  |  |  |
State income tax, net of federal tax effect |  |  | 3,339 |  |  |  | 1.37 | %
Tax-exempt income, net of expenses |  |  | (92 | ) |  |  | (0.04 | )%
Bank-owned life insurance contracts |  |  | (1,591 | ) |  |  | (0.65 | )%
Excess tax benefit from stock compensation |  |  | (1,242 | ) |  |  | (0.51 | )%
Federal tax credits, net of related amortization |  |  | (16,002 | ) |  |  | (6.54 | )%
Other |  |  | 1,960 |  |  |  | 0.80 | %
Effective income tax and rate |  | $ | 37,735 |  |  |  | 15.43 | %
|  | Year Ended December 31, 2022 |
|  | Amount |  |  | % of Pre-tax Earnings |
|  | (In Thousands) |
Income tax at statutory federal rate |  | $ | 64,796 |  |  |  | 21.00 | %
Effect on rate of: |  |  |  |  |  |  |  |
State income tax, net of federal tax effect |  |  | 7,247 |  |  |  | 2.35 | %
Tax-exempt income, net of expenses |  |  | (188 | ) |  |  | (0.06 | )%
Bank-owned life insurance contracts |  |  | (1,812 | ) |  |  | (0.59 | )%
Excess tax benefit from stock compensation |  |  | (1,091 | ) |  |  | (0.35 | )%
Federal tax credits, net of related amortization |  |  | (11,131 | ) |  |  | (3.61 | )%
Other |  |  | (497 | ) |  |  | (0.16 | )%
Effective income tax and rate |  | $ | 57,324 |  |  |  | 18.58 | %
|  | Year Ended December 31, 2021 |
|  | Amount |  |  | % of Pre-tax Earnings |
|  | (In Thousands) |
Income tax at statutory federal rate |  | $ | 53,203 |  |  |  | 21.00 | %
Effect on rate of: |  |  |  |  |  |  |  |
State income tax, net of federal tax effect |  |  | 4,952 |  |  |  | 1.95 | %
Tax-exempt income, net of expenses |  |  | (242 | ) |  |  | (0.10 | )%
Bank-owned life insurance contracts |  |  | (1,395 | ) |  |  | (0.55 | )%
Excess tax benefit from stock compensation |  |  | (2,335 | ) |  |  | (0.92 | )%
Federal tax credits |  |  | (11,019 | ) |  |  | (4.35 | )%
Other |  |  | 2,451 |  |  |  | 0.97 | %
Effective income tax and rate |  | $ | 45,615 |  |  |  | 18.00 | %
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | December 31, |
|  | 2023 |  |  | 2022 |
|  | (In Thousands) |
Deferred tax assets: |  |  |  |  |  |  |  |
Allowance for credit losses |  | $ | 38,483 |  |  | $ | 36,720 |
Other real estate owned |  |  | 253 |  |  |  | 316 |
Nonqualified equity awards |  |  | 1,354 |  |  |  | 1,229 |
Nonaccrual interest |  |  | 327 |  |  |  | 289 |
State tax credits carryforward |  |  | 2,011 |  |  |  | 1,795 |
Deferred loan fees |  |  | 3,806 |  |  |  | 4,720 |
Reserve for unfunded commitments |  |  | 144 |  |  |  | 144 |
Accrued bonus |  |  | 3,052 |  |  |  | 4,540 |
Capital loss carryforward |  |  | 1,648 |  |  |  | 1,889 |
Lease liability |  |  | 6,886 |  |  |  | 4,923 |
Deferred revenue |  |  | 8 |  |  |  | 20 |
Net unrealized loss on securities available for sale |  |  | 18,129 |  |  |  | 16,339 |
Other deferred tax assets |  |  | 2,323 |  |  |  | 60 |
Total deferred tax assets |  |  | 78,424 |  |  |  | 72,984 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Depreciation |  |  | 4,289 |  |  |  | 4,431 |
Prepaid expenses |  |  | 735 |  |  |  | 975 |
Investments |  |  | 1,484 |  |  |  | 1,054 |
Right-of-use assets and other leasing transactions |  |  | 6,639 |  |  |  | 4,723 |
Other deferred tax liabilities |  |  | 2,359 |  |  |  | 1,353 |
Total deferred tax liabilities |  |  | 15,506 |  |  |  | 12,536 |
Net deferred tax assets |  | $ | 62,918 |  |  | $ | 60,448 |
Summary of Income Tax Contingencies [Table Text Block] |
|  | 2023 |  |  | 2022 |  |  | 2021 |
|  | (In Thousands) |
Balance, beginning of year |  | $ | - |  |  | $ | 3,659 |  |  | $ | 3,238 |
Increases related to prior year tax positions |  |  | 1,285 |  |  |  | - |  |  |  | 864 |
Decreases related to prior year tax positions |  |  | - |  |  |  | (2,860 | ) |  |  | - |
Increases related to current year tax positions |  |  | 807 |  |  |  | - |  |  |  | - |
Settlements |  |  | - |  |  |  | - |  |  |  | - |
Lapse of statute |  |  | - |  |  |  | (799 | ) |  |  | (443 | )
Balance, end of year |  | $ | 2,092 |  |  | $ | - |  |  | $ | 3,659 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 9 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-9 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-2 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 19 -SubTopic 10 -Topic 740 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-19 + Details
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