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Investment Securities Available-for-Sale - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Federal Reserve and Federal Home Loan Bank stock |  | $ 65,067 | $ 34,153 |
Transfer to real estate owned |  | 475 | 149 | $ 6,750
Payments to acquire held-to-maturity securities |  | 290,740 | 0 | 0
Realized gain recognized at time of transfer |  | 0 |  |
Allowance for credit losses |  | (17) | (620) |
HTM Allowance for credit losses |  | $ (766) | 0 |
Debt securities as percentage of total investment securities |  | 100.00% |  |
Debt securities weighted average duration |  | 4 years 9 months 18 days |  |
Debt securities, available-for-sale, realized gain |  | $ 18 | 3,200 | 1,900
Debt securities, available-for-sale, realized loss |  | 187 | 187 | 46
Proceeds from sales and calls of investment securities |  | $ 14,600 | $ 201,000 | $ 124,100
Holdings of securities of any one issuer |  | 10.00% | 10.00% |
Other Assets |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Accrued interest on available for sale securities |  | $ 7,800 | $ 6,000 |
Residential mortgage-backed securities |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Transfer to real estate owned | $ 1,100,000 |  |  |
Payments to acquire held-to-maturity securities | 237,000 |  |  |
Unrealized gain (loss) | $ 66,200 | 59,100 |  |
Allowance for credit losses |  | 0 | 0 |
Corporate and Municipal Securities |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Allowance for credit loss, expense |  | 163 |  |
Collateral Pledged |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Available-for-sale securities pledged as collateral |  | $ 220,100 | $ 261,000 |

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