Note 14 - Stockholders' Equity (Details Textual)
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6 Months Ended |
12 Months Ended |
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Oct. 15, 2025
USD ($)
$ / shares
shares
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May 06, 2025
shares
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Apr. 29, 2025
shares
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Jun. 30, 2026
USD ($)
$ / shares
shares
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Jun. 30, 2025
USD ($)
$ / shares
shares
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Dec. 31, 2025
$ / shares
shares
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Nov. 30, 2021
USD ($)
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| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |
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$ 0.0001
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| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares) | shares |
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0
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| Treasury Stock, Shares, Acquired (in shares) | shares |
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0
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| Common Stock, Shares, Issued (in shares) | shares |
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131,897,117
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| Common Stock, Shares, Outstanding (in shares) | shares |
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120,892,607
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| Stock Issued During Period, Value, New Issues |
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$ 4,778,000
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$ 2,993,000
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| Dividends, Preferred Stock, Cash |
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$ 10,460,000
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$ 10,460,000
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| Costamare Bulkers Inc. (“CBI”) [Member] |
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| Conversion of Stock, Shares Issued (in shares) | shares |
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5
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5
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| Costamare Shareholders [Member] | Costamare Bulkers [Member] |
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| Stock Issued During Period, Shares, New Issues (in shares) | shares |
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24,022,218
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| O 2024 Q4 Dividends [Member] |
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| Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.115
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| Dividends, Common Stock, Cash |
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$ 13,715,000
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| Common Stock Dividends, Shares (in shares) | shares |
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7,056
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| O, 2025, Q1 Dividends [Member] |
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| Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.115
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| Dividends, Common Stock, Cash |
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$ 13,734,000
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| Common Stock Dividends, Shares (in shares) | shares |
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8,635
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| O, 2025, Q4 Dividends [Member] |
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| Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.115
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| Dividends, Common Stock, Cash |
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$ 13,789,000
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| Common Stock Dividends, Shares (in shares) | shares |
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4,830
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| O 2026 Q1 Dividends [Member] |
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| Common Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.115
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| Dividends, Common Stock, Cash |
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$ 13,813,000
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| Common Stock Dividends, Shares (in shares) | shares |
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4,648
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| Common Stock [Member] |
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| Stock Issued During Period, Shares, New Issues (in shares) | shares |
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308,678
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314,891
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| Stock Repurchase Program, Authorized Amount |
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$ 150,000,000
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| Share Repurchase Program, Remaining Authorized, Amount |
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$ 29,905,000
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| Stock Issued During Period, Value, New Issues |
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0
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$ 0
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| Dividends, Preferred Stock, Cash |
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$ (0)
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$ (0)
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| Preferred Stock [Member] |
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| Stock Repurchase Program, Authorized Amount |
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$ 150,000,000
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| Common Stock Issued for the Services Agreement [Member] |
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| Stock Issued During Period, Shares, New Issues (in shares) | shares |
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299,200
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299,200
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| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |
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$ 0.0001
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$ 0.0001
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| Common Stock Issued for Dividend Reinvestment Plan [Member] |
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| Stock Issued During Period, Shares, New Issues (in shares) | shares |
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9,478
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31,096
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| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |
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$ 0.0001
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$ 0.0001
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| Shares Issued, Price Per Share (in dollars per share) | $ / shares |
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$ 15.8722
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$ 10.534
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| Series E Preferred Stock [Member] |
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| Preferred Stock, Votes per Share |
50,000
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| Preferred Stock, Redemption Price Per Share (in dollars per share) | $ / shares |
$ 1
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| Series E Preferred Stock [Member] | Chairman and Chief Executive Officer, Konstantinos Konstantakopoulos [Member] |
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| Stock Issued During Period, Shares, New Issues (in shares) | shares |
1,200
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| Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |
$ 0.0001
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| Stock Issued During Period, Value, New Issues |
$ 1,200
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| Series B Preferred Stock [Member] | O, 2024, Q4 October 15, 2024 to January 14, 2025, Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 939,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.476563
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| Series B Preferred Stock [Member] | O, 2025, Q1, January 15, 2025 to April 14, 2025 Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 939,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.476563
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| Series B Preferred Stock [Member] | O, 2025, Q4 October 15, 2025 to January 14, 2026, Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 939,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.476563
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| Series B Preferred Stock [Member] | O, 2026, Q1,January 15, 2026 to April 14, 2026, Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 939,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.476563
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| Series B Preferred Stock [Member] | Preferred Stock [Member] |
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| Stock Issued During Period, Shares, New Issues (in shares) | shares |
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0
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0
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| Stock Issued During Period, Value, New Issues |
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$ 0
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$ 0
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| Dividends, Preferred Stock, Cash |
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(0)
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(0)
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| Series C Preferred Stock [Member] | O, 2024, Q4 October 15, 2024 to January 14, 2025, Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 2,111,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.53125
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| Series C Preferred Stock [Member] | O, 2025, Q1, January 15, 2025 to April 14, 2025 Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 2,111,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.53125
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| Series C Preferred Stock [Member] | O, 2025, Q4 October 15, 2025 to January 14, 2026, Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 2,111,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.53125
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| Series C Preferred Stock [Member] | O, 2026, Q1,January 15, 2026 to April 14, 2026, Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 2,111,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.53125
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| Series C Preferred Stock [Member] | Preferred Stock [Member] |
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| Stock Issued During Period, Shares, New Issues (in shares) | shares |
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0
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0
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| Stock Issued During Period, Value, New Issues |
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$ 0
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$ 0
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| Dividends, Preferred Stock, Cash |
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(0)
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(0)
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| Series D Preferred Stock [Member] | O, 2024, Q4 October 15, 2024 to January 14, 2025, Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 2,180,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.546875
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| Series D Preferred Stock [Member] | O, 2025, Q1, January 15, 2025 to April 14, 2025 Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 2,180,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.546875
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| Series D Preferred Stock [Member] | O, 2025, Q4 October 15, 2025 to January 14, 2026, Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
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$ 2,180,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.546875
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| Series D Preferred Stock [Member] | O, 2026, Q1,January 15, 2026 to April 14, 2026, Dividends [Member] |
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| Dividends, Preferred Stock, Cash |
|
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$ 2,180,000
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| Preferred Stock, Dividends, Per Share, Cash Paid (in dollars per share) | $ / shares |
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$ 0.546875
|
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| Series D Preferred Stock [Member] | Preferred Stock [Member] |
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| Stock Issued During Period, Shares, New Issues (in shares) | shares |
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0
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0
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| Stock Issued During Period, Value, New Issues |
|
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$ 0
|
$ 0
|
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| Dividends, Preferred Stock, Cash |
|
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$ (0)
|
$ (0)
|
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