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v3.23.1

Note 3 - Investment Securities (Details Textual) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) | Dec. 31, 2022 USD ($) | Mar. 07, 2022 USD ($)
Debt Securities, Held-to-Maturity, Number of Securities | 0 |  |  |
Debt Securities, Held-to-Maturity, Allowance for Credit Loss, Ending Balance | $ 0 |  |  |
Debt Securities, Held-to-Maturity, Nonaccrual | 0 |  | $ 0 |
Debt Securities, Available-for-sale, Number of Positions Sold |  | 3 |  |
Proceeds from Sale of Debt Securities, Available-for-Sale | 0 | $ 2,111,000 |  |
Debt Securities, Available-for-Sale, Gain (Loss), Total |  | $ (92,000) |  |
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Ending Balance | $ 0 |  |  |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions | 523 |  | 547 |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Percentage | 98.00% |  | 98.00% |
Collateral Pledged [Member] |  |  |  |
Debt Securities, Available-for-Sale, Restricted | $ 783,000,000 |  | $ 1,100,000,000 |
Commonwealth [Member] |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities |  |  |  | $ 247,000,000
Other Assets [Member] |  |  |  |
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss | 3,000,000 |  | 4,000,000 |
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss | $ 729,000 |  | $ 2,000,000 |

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- Definition Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479907/805-20-50-1 + Details
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- Definition Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2A -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3A -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-3A Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 3B -Publisher FASB -URI https://asc.fasb.org//1943274/2147479106/326-30-50-3B + Details
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