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v3.22.1

Loans - Narrative (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 USD ($) loan | Mar. 31, 2021 USD ($) loan | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing Receivable, Paycheck Protection Program | $ 136,000,000 |  | $ 276,200,000 |
Financing Receivable, Paycheck Protection Program, Net of Deferred Fees | 134,100,000 |  | 272,000,000 |
Financing Receivable, Paycheck Protection Program, Unearned Fees | 1,900,000 |  | 4,200,000 |
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) | 11,500,000 |  | 11,900,000 |
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available | 2,900,000,000 |  | 2,500,000,000 |
Allowance for credit loss adjustment | 41,000,000 |  |  |
Nonperforming loan balances, excluding government guaranteed balances |  |  | 6,500,000 |
Other Assets [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Accrued interest receivable | 29,600,000 |  | 30,600,000 |
Enterprise Value Lending Portfolio Niche Segment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for credit loss adjustment | 7,000,000 |  |  |
Non-Covered Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing receivable, allowance for credit loss | 139,212,000 | $ 131,527,000 | 145,041,000 | $ 136,671,000
Nonperforming loan balances, excluding government guaranteed balances | 4,000,000 |  |  |
Interest income on nonaccrual loans | $ 0 | $ 0 |  |
Number of loans restructured | loan | 0 | 0 |  |
Non-Covered Loans | Enterprise Value Lending Portfolio Niche Segment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing receivable, allowance for credit loss | $ 19,100,000 |  |  |
Non-Covered Loans | Agriculture Portfolio Niche Segment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing receivable, allowance for credit loss |  |  | $ 18,200,000 |
Cumulative Effect, Period Of Adoption, Adjustment | Non-Covered Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing receivable, allowance for credit loss | $ 14,700,000 |  |  |

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