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v3.23.1

Securities - Narrative (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Schedule of Investments [Line Items] |  |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss | $ 0 |  | $ 0 |
Transferred Securities, Unrealized Loss, Before Tax | 119,600,000 |  | 121,500,000 |
Securities transferred, Unrealized Loss, Net of Tax | 94,500,000 |  | 96,000,000 |
Fair value of securities transferred from AFS to HTM | 0 |  | 1,250,000,000 |
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] |  |  |  |
Net gain (loss) on sale of securities AFS | 2,146,000 | $ 1,543,000 |  |
Gross realized gains on AFS securities | 1,100,000 | 1,800,000 |  |
Gross realized losses on AFS securities | 3,200,000 | 238,000 |  |
Equity investments | 9,909,000 |  | 11,181,000 |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Sale of HTM portfolio | 0 | 0 |  |
Interest receivable | 34,890,000 |  | 49,350,000 |
Debt Securities, Held-to-maturity, Nonaccrual | 0 |  | 0 |
FHLB stock with other-than-temporary impairment | 0 |  |  |
Other-than-temporarily impaired equity investments | $ 0 |  |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | 515 |  |  |
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents | $ 310,492,000 | 187,107,000 | 199,252,000 | $ 201,753,000
Less: Net gains recognized during the period on equity investments sold during the period | 2,416,000 | 0 |  |
State and political subdivisions |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) | 0 | 0 |  |
Corporate bonds and other |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Debt Securities, Held-to-Maturity, Excluding Accrued Interest, Credit Loss Expense (Reversal) | 0 | $ 0 |  |
Asset Pledged as Collateral |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Debt Securities | 2,130,000,000 |  | 1,820,000,000 |
Financial Asset, Past Due |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Securities held to maturity (estimated fair value of $138,879) | 0 |  | 0 |
Available-for-sale Securities |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Interest receivable | 9,800,000 |  | 16,900,000 |
Held-to-maturity Securities |  |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |  |
Interest receivable | $ 8,400,000 |  | $ 13,600,000 |

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