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v3.23.1

Loans - Narrative (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) | Mar. 31, 2022 USD ($) loan | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium) | $ 10,300,000 |  | $ 11,900,000 |
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available | 3,400,000,000 |  | 2,800,000,000 |
Proceeds from sale of SBA loans | 8,800,000 | $ 0 |  |
Gain on sale of SBA loans | 501,000 | 0 |  |
Allowance for credit loss adjustment | 43,200,000 |  |  |
Nonperforming loan balances, excluding government guaranteed balances | $ 6,800,000 |  | 6,700,000 |
Minimum |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Term extensions from modifications (in months) | 2 months |  |  |
Maximum |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Term extensions from modifications (in months) | 12 months |  |  |
Other Assets |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Accrued interest receivable | $ 44,700,000 |  | 48,100,000 |
Enterprise Value Lending Portfolio Niche Segment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Allowance for credit loss adjustment | 13,800,000 |  |  |
Non-Covered Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing receivable, allowance for credit loss | 138,295,000 | 139,212,000 | 136,932,000 | $ 145,041,000
Interest income on nonaccrual loans | 0 | $ 0 |  |
Number of loans restructured | loan |  | 0 |  |
Number of troubled debt restructuring subsequently defaulted | loan |  | 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 | 21,000,000 |  |  |
Non-Covered Loans | Agriculture Portfolio Niche Segment [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing receivable, allowance for credit loss |  |  | $ 16,100,000 |
Cumulative Effect, Period Of Adoption, Adjustment | Non-Covered Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Financing receivable, allowance for credit loss | $ 14,200,000 |  |  |

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