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Note 11 - Preferred Stock (Details Textual) $ / shares in Thousands |  | 12 Months Ended
--- | --- | ---
Aug. 19, 2021 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($) shares
Stock Issued During Period, Shares, New Issues (in shares) | shares |  | 153 | 4,981 | 1,340
Stock Issued During Period, Value, New Issues |  | $ 0 | $ 0 | $ 0
Preferred Stock, No Par Value (in dollars per share) | $ / shares |  | $ 0 | $ 0 |
Proceeds from Issuance of Preferred Stock and Preference Stock |  | $ 0 | $ 110,927,000 | $ 0
Series A Preferred Stock [Member] |  |  |  |
Preferred Stock, Dividend Rate, Percentage | 5.25% |  |  |
Preferred Stock, No Par Value (in dollars per share) | $ / shares | $ 0 |  |  |
Preferred Stock, Liquidation Preference, Value | $ 1,000 |  |  |
Series A Preferred Stock [Member] | Underwritten Public Offering [Member] |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | shares | 115,000 |  |  |
Stock Issued During Period, Value, New Issues | $ 115,000,000 |  |  |
Depositary Shares, Interest in Preferred Stock | 0.025 |  |  |
Proceeds from Issuance of Preferred Stock and Preference Stock | $ 110,900,000 |  |  |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
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- Definition Value of the difference between preference in liquidation and the par or stated values of the preferred shares. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)) -URI https://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (h) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
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