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v3.25.4

Summary of significant accounting policies - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended | 60 Months Ended
--- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Sep. 17, 2024
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |
Cash and cash equivalents | $ 57,832 | $ 118,662 |
Cash equivalents | $ 56,000 | $ 118,000 |
8.25% Series A Cumulative Redeemable Preferred Stock |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |
Preferred stock dividend percentage | 8.25% | 8.25% |
Liquidation preference (in dollars per share) | $ 25.00 |  |
8.00% Series B Cumulative Redeemable Preferred Stock |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |
Preferred stock dividend percentage | 8.00% | 8.00% |
Liquidation preference (in dollars per share) | $ 25.00 |  |
8.000% Series C Fixed-to-Floating Rate Cumulative Redeemable Preferred Stock |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |
Preferred stock dividend percentage | 8.00% | 8.00% | 8.00%
Liquidation preference (in dollars per share) | $ 25.00 |  | $ 25.00
Preferred units, liquidation spread, percent |  |  | 0.26161%
Basis spread percentage |  |  | 6.476%

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- Definition Amount of cash and cash equivalent. Cash includes, but is not limited to, currency on hand, demand deposit with financial institution, and account with general characteristic of demand deposit. Cash equivalent includes, but is not limited to, short-term, highly liquid investment that is both readily convertible to known amount of cash and so near maturity that it presents insignificant risk of change in value because of change in interest rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483467/210-10-45-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-4 + Details
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