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Note 3 - Business Combinations - Schedule of Impaired Financing Receivables (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss | $ 3,992,534 | $ 2,759,583 |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | 59,929 | 35,843 | $ 31,146 | $ 31,572
Carrying amount, net of allowance for loan losses | 3,932,605 | $ 2,723,740 |  |
Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest | $ 10,200 |  |  |
Metro Phoenix Bank [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |
Outstanding balance |  |  | 175 |
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss |  |  | 151 |
Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest |  |  | 0 |
Carrying amount, net of allowance for loan losses |  |  | 151 |
Metro Phoenix Bank [Member] | Financial Asset Acquired with Credit Deterioration [Member] | Real Estate Construction Portfolio Segment [Member] |  |  |  |
Outstanding balance |  |  | $ 175 |

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- Definition For receivables acquired in a business combination, excluding certain loans and debt securities acquired in a transfer (as defined), this element represents the gross contractual amounts receivable, by major class of receivable, such as loans, direct finance leases (as defined), and any other class of receivables. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-1 + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Amortized cost excluding accrued interest, after allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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- Definition Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-5 + Details
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- Details
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- Details
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- Details
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