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Long-Term Debt - Additional Information (Details) - USD ($) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Nov. 23, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2022 | Oct. 31, 2021
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of long-term debt |  | $ 32,417,000 | $ 202,873,000 | $ 171,000 |  |
Debt prepayment penalty |  | 0 | 6,123,000 | 121,000 |  |
Subordinated notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Repurchase amount |  |  | 30,000,000 |  |  |
Carrying Value |  |  |  |  | $ 30,000,000 |
Par percentage | 100.00% |  |  |  |  |
Redemption price percentage | 100.00% |  |  |  |  |
FHLB Advances |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Repayments of long-term debt |  | $ 0 | 150,000,000 | 0 |  |
Debt prepayment penalty |  |  | 6,123,000 | $ 121,000 |  |
PHC Statutory Trust I |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Fixed interest rate |  | 5.49% |  |  |  |
Capital Bancorp Capital Trust I |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Fixed interest rate |  | 4.42% |  |  |  |
Junior subordinated notes |  | $ 108,450,000 |  |  |  |
Threshold of assets to lose tier 1 treatment |  | $ 15,000,000,000 |  |  |  |
First M&F Statutory Trust I |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Fixed interest rate |  | 4.18% |  |  |  |
6.50% Fixed-to-Floating Rate Subordinated Notes | Subordinated notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Repurchase amount |  |  |  |  |  | $ 15,000,000
Interest rate of senior note |  |  |  |  |  | 6.50%
5.00% Fixed-to-Floating Rate Subordinated Notes | Subordinated notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Repurchase amount |  |  | $ 60,000,000 |  |  |
Interest rate of senior note |  |  | 5.00% |  |  |

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