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Note 13 - Stockholders' Equity and Earnings Per Share (Details Textual) - USD ($) shares in Thousands, $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Statutory Accounting Practices, Statutory Amount Available for Dividend Payments with Regulatory Approval | $ 296.2 | $ 207.8
Preferred Stock, Shares Issued, Total (in shares) | 0 |

X
- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
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Period Type: | instant

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- Definition Amount of dividends that can be declared or paid with approval of regulatory agency. + References No definition available. + Details
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Period Type: | instant