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Note 4 - Shareholders' Equity and Preferred Stock (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 2 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 29, 2023 | Aug. 10, 2022
Stock Repurchased and Retired During Period, Shares (in shares) |  | 575,156 | 1,674,161 |  |
Stock Repurchased and Retired During Period, Value |  | $ 17,600 | $ 88,900 |  |
Maximum [Member] |  |  |  |  |
Common Stock Aggregate Offering Price |  |  |  | $ 50,000 |
Series B Preferred Stock [Member] |  |  |  |  |
Stock Repurchased and Retired During Period, Shares (in shares) |  | 1,806 | 3,500 |  |
Stock Repurchased and Retired During Period, Value |  | $ 29,000 | $ 69,000 |  |
Series B Preferred Stock [Member] | Maximum [Member] |  |  |  |  |
Preferred Stock, Aggregate Offering Price |  |  |  |  | $ 100,000
Series B Preferred Stock [Member] | Public Offering [Member] |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 3,188,533 | 53,727 | 19,607 |  |
Preferred Stock, Dividend Rate, Percentage | 7.625% |  |  |  |
Preferred Stock, Liquidation Preference Per Share (in dollars per share) | $ 25 |  |  |  |
Proceeds from Issuance of Preferred Stock and Preference Stock | $ 76,500 | $ 1,100 | $ 400 |  |
Preferred Stock, Dividends Per Share, Declared (in dollars per share) | $ 1.90625 |  |  |  |
Common Shares [Member] | Public Offering [Member] |  |  |  |  |
Proceeds from Issuance of Common Stock |  | $ 0 |  |  |

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- Definition The percentage rate used to calculate dividend payments on preferred stock. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-12A(Column A)(Footnote 3)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12(Column A)(Footnote 4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column A)(Footnote 3)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 320 -Name Accounting Standards Codification -Section S99 -Paragraph 6 -Subparagraph (SX 210.12-14(Column A)(Footnote 3)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480032/946-320-S99-6 + Details
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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480678/235-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-3 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-4 Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-13 + Details
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