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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 9 Months Ended
--- | --- | --- | ---
Oct. 05, 2021 | Jun. 15, 2021 | Sep. 30, 2021
Summary Of Significant Accounting Policies [Line Items] |  |  |
Preferred Stock, par value (in dollars per share) |  |  | $ 0.01
Net proceeds, after underwriting discounts and expenses |  |  | $ 175,487
ASU No. 2019-12 |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Change in Accounting Principle, Accounting Standards Update, Adoption Date |  |  | Dec. 15, 2020
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] |  |  | true
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] |  |  | true
Depositary Shares |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Preferred Stock Issued, Net (in shares) |  | 7,200,000 |
Preferred stock, redemption price per share |  | $ 25 |
Depositary Shares | Subsequent Event |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Cash dividend declared per share | $ 0.2735 |  |
4.375% Fixed Rate Non Cumulative Perpetual Preferred Stock |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Percentage of ownership interest in share |  | 0.025% |
Series A Preferred Stock |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Preferred Stock, par value (in dollars per share) |  | $ 0.01 |
Preferred stock, liquidation preference per share |  | $ 1,000 |
Net proceeds, after underwriting discounts and expenses |  | $ 175,500 |
Preferred stock, dividend rate, percentage per annum |  | 4.375% |
Preferred stock, voting rights |  |  | Holders of the Series A Preferred Stock will not have voting rights
Preferred stock, redemption price per share |  | $ 1,000 |
Preferred stock, redemption terms |  |  | The Company may redeem the Series A Preferred Stock at its option, (i) in whole or in part, from time to time, on any dividend payment date on or after August 1, 2026 or (ii) in whole but not in part, at any time within 90 days following a regulatory capital treatment event, in either case at a redemption price equal to $1,000 per share (equivalent to $25 per depositary share), plus any declared and unpaid dividends
Preferred Stock, redemption date |  | Aug. 01, 2026 |
Series A Preferred Stock | Subsequent Event |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |
Cash dividend declared per share | $ 10.94 |  |
Dividends payable, date to be paid | Nov. 01, 2021 |  |
Dividends payable, date of record | Oct. 18, 2021 |  |

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