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Regulatory Capital and Dividends - Narrative (Details) |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 01, 2022 $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Mar. 31, 2022 | Dec. 31, 2021 USD ($) $ / shares shares | Jan. 27, 2021 USD ($) shares | Jan. 01, 2021 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Actual |  | $ 1,558,281,000 |  | $ 1,374,240,000 |  |
Actual |  | 0.0910 |  | 0.0930 |  |
Dividends available |  | $ 288,700,000 |  |  |  |
Dividend reinvestment and stock purchase plan, stockholder's maximum amount of cash payments per quarter in purchase of common stock |  | 5,000 |  |  |  |
Retained earnings |  | $ (1,012,774,000) |  | $ (864,839,000) |  |
Cash dividends on preferred stock (in dollars per share) | $ / shares |  | $ 140.64 |  |  |  |
Cash dividends on preferred stock |  | $ 1,406,000 |  |  |  |
Stock Repurchase Program |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Stock authorized to be repurchased (in shares) | shares |  |  |  |  | 3,333,000 |
Stock authorized to be repurchased (in shares) |  |  |  |  | $ 100,000,000 |
Percent of outstanding shares |  |  |  |  | 6.00% |
Available to repurchase (in shares) | shares |  | 2,700,000 |  |  |  |
Available to repurchase |  | $ 74,500,000 |  |  |  |
Series A Preferred Stock |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Preferred Stock, issued (in shares) | shares |  | 10,000 |  | 10,000 |  |
Liquidation value per share (in dollars per share) | $ / shares |  | $ 2,500 |  | $ 2,500 |  |
Cash dividends on preferred stock (in dollars per share) | $ / shares |  | $ 46.88 |  |  |  |
Depository share dividends (in dollars per share) |  | 0.4688 |  |  |  |
Entity listing, depository receipt ratio | 0.01 |  |  |  |  |
Cash dividends on preferred stock |  | $ 1,400,000 |  |  |  |
Series A Preferred Stock | Level One |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Preferred Stock, issued (in shares) | shares | 10,000 |  |  |  |  |
Dividend rate, percentage | 7.50% |  |  |  |  |
Liquidation value per share (in dollars per share) | $ / shares | $ 2,500 |  |  |  |  |
Outstanding preferred stock |  | 25,000,000 |  |  |  |
Preferred Class B |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Entity listing, depository receipt ratio | 0.01 |  |  |  |  |
Preferred Class B | Level One |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Entity listing, depository receipt ratio |  |  | 0.01 |  |  |
Cumulative effect of ASC 326 adoption |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Retained earnings |  |  |  |  |  | $ 68,000,000
PPP |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Actual |  | $ 4,700,000 |  | $ 106,600,000 |  |
Actual |  | 0 |  | 0 |  |

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