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Stockholders' Equity - Series C (Details) - Series C Preferred Stock $ / shares in Units, $ in Millions |  |  | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 02, 2020 USD ($) $ / shares shares | Feb. 28, 2020 quarter director $ / shares shares | Sep. 30, 2024 $ / shares shares | Mar. 31, 2024 | Sep. 30, 2023 $ / shares | Jun. 30, 2023 $ / shares | Mar. 31, 2023 | Jun. 30, 2024 $ / shares | Sep. 30, 2024 $ / shares shares | Dec. 31, 2023 $ / shares shares | Dec. 31, 2022 $ / shares
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate (as a percent) |  |  |  |  |  |  |  |  | 6.50% | 6.50% |
Preferred stock, shares issued (in shares) | shares |  |  | 11,000,000 |  |  |  |  |  | 11,000,000 | 11,000,000 |
Preferred stock, par value (in dollars per share) |  |  | $ 0.01 |  |  |  |  |  | $ 0.01 | $ 0.01 |
Minimum percentage of preferred shareholders required for approval |  | 66.67% |  |  |  |  |  |  |  |  |
Preferred Stock |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |
Preferred stock, dividend rate (as a percent) |  | 6.50% | 6.50% | 6.50% | 6.50% | 6.50% | 6.50% | 6.50% |  |  |
Shares reclassified to redeemable capital stock (in shares) | shares |  | 12,650,000 |  |  |  |  |  |  |  |  |
Preferred stock, shares issued (in shares) | shares | 11,000,000.0 |  |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) | $ 0.01 |  |  |  |  |  |  |  |  |  |
Preferred stock, liquidation preference (in dollars per share) | $ 25.00 | $ 25.00 | $ 25.00 |  | $ 25.00 | $ 25.00 |  | $ 25.00 | $ 25.00 | $ 25.00 | $ 25.00
Proceeds from issuance of redeemable preferred stock | $ | $ 266.0 |  |  |  |  |  |  |  |  |  |
Debt instrument, basis spread on variable rate (in percent) |  | 5.345% |  |  |  |  |  |  |  |  |
Preferred stock, redemption price (in dollars per share) |  | $ 25.00 |  |  |  |  |  |  |  |  |
Maximum quarters without dividends to get voting rights, in quarters | quarter |  | 6 |  |  |  |  |  |  |  |  |
Number of additional directors that can be elected by preferred stock holders | director |  | 2 |  |  |  |  |  |  |  |  |

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