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v3.22.1

Securities - Narrative (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($)
Schedule of Investments [Line Items] |  |  |
Debt Securities, Available-for-sale, Allowance for Credit Loss | $ 0 |  | $ 0
Debt Securities, Held-to-maturity, Credit Loss Expense (Reversal) | 0 | $ 0 |
Transferred Securities, Unrealized Loss, Before Tax | 40,400,000 |  | 1,500,000
Securities transferred, Unrealized Loss, Net of Tax | 31,900,000 |  | 1,200,000
Fair value of securities transferred from AFS to HTM | 385,800,000 |  | 0
Available-for-sale Securities, Gross Realized Gain (Loss) [Abstract] |  |  |
Net gain (loss) on sale of securities AFS | (1,543,000) | 2,003,000 |
Gross realized gains on AFS securities | 238,000 | 2,100,000 |
Gross realized losses on AFS securities | 1,800,000 | 52,000 |
Equity investments | 11,475,000 |  | 11,841,000
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |
Sale of HTM portfolio | 0 | $ 0 |
Interest receivable | 28,367,000 |  | 39,145,000
Debt Securities, Held-to-maturity, Nonaccrual | 0 |  | 0
FHLB stock with other-than-temporary impairment | 0 |  |
Other-than-temporarily impaired equity investments | 0 |  |
Investment Securities, Not Separately Reported | $ 1,490,000,000 |  | 1,610,000,000
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | 500 |  |
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 | 13,000,000 |  | 25,600,000
Held-to-maturity Securities |  |  |
Debt Securities, Held-to-maturity, Sale or Transfer of Investment [Abstract] |  |  |
Interest receivable | $ 2,800,000 |  | $ 244,000

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