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Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Oct. 27, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Oct. 01, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Debt prepayment penalty |  | $ 28 | $ 0 | $ 118 |
Subsequent Event | Interest Rate Swap |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Notional amount of terminated instruments | $ 100,000 |  |  |  |
Termination fees | 4,730 |  |  |  |
Federal Home Loan Bank | Subsequent Event |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Prepayment of debt | 150,000 |  |  |  |
Debt prepayment penalty | $ 6,123 |  |  |  |
Metropolitan Notes | Subordinated notes | Subsequent Event |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Repurchase amount |  |  |  |  | $ 15,000
Interest rate of senior note |  |  |  |  | 6.50%
FHLB Advances | Subsequent Event |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Interest rate of senior note | 1.358% |  |  |  |
FHLB Advances | London Interbank Offered Rate (LIBOR) | Subsequent Event |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Basis spread on variable rate | 0.50% |  |  |  |

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