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Earnings Per Share - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions |  |  |  | 9 Months Ended |
--- | --- | --- | --- | --- | ---
May 17, 2021 | Feb. 01, 2021 | Jan. 27, 2021 | Sep. 30, 2021 | Sep. 30, 2020 | Dec. 31, 2020
Sale Of Stock [Line Items] |  |  |  |  |  |
Common stock, par value (in USD per share) |  |  | $ 0.01 | $ 0.01 |  | $ 0.01
Sale price to public (in USD per share) |  |  | $ 30.25 |  |  |
Underwriting discounts, commissions and other related costs related to offering |  |  |  | $ 12.7 | $ 0.0 |
Conversion of Series A Preferred Stock into Common Stock |  |  |  |  |  |
Sale Of Stock [Line Items] |  |  |  |  |  |
Common stock, par value (in USD per share) | $ 0.01 |  |  |  |  |
Conversion of Series A Preferred Stock into Common Stock | Common Stock |  |  |  |  |  |
Sale Of Stock [Line Items] |  |  |  |  |  |
Shares of common stock issued in conversion (shares) | 22,609,000 |  |  |  |  |
Public Offering |  |  |  |  |  |
Sale Of Stock [Line Items] |  |  |  |  |  |
Stock sold in offering (shares) |  | 8,625,000 |  |  |  |
Net proceeds from stock offering |  | $ 260.9 |  |  |  |
Underwriting discounts, commissions and other related costs related to offering |  | $ 12.7 |  |  |  |
Firm Shares |  |  |  |  |  |
Sale Of Stock [Line Items] |  |  |  |  |  |
Stock sold in offering (shares) |  |  | 7,500,000 |  |  |
Additional Shares Granted to Underwriters |  |  |  |  |  |
Sale Of Stock [Line Items] |  |  |  |  |  |
Stock sold in offering (shares) |  |  | 1,125,000 |  |  |

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