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v3.23.1

Loans and Allowance for Credit Losses - Narrative (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 USD ($) loan | Mar. 31, 2022 USD ($) loan | Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 16,555,098,000 |  | $ 16,142,124,000
Deferred origination fees, net | 19,200,000 |  | 26,400,000
Financing receivable, accrued interest excluded from amortized costs | 64,700,000 |  | 65,400,000
Nonaccrual loans with no allowance for credit loss | 14,300,000 |  | 16,900,000
Foreclosed assets and other real estate owned | 2,721,000 |  | 2,887,000
Financing receivable, collateral dependent, amount | 101,373,000 |  | 70,926,000
Unfunded commitments | 0 | $ 0 |
Unfunded commitments, allowance for credit loss | 41,900,000 |  | 41,900,000
Off-balance sheet, credit loss, liability, credit loss expense (reversal) | $ 0 | $ 0 |
Minimum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing receivable, term of loan | 1 year |  |
Maximum |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Financing receivable, term of loan | 3 years |  |
Residential Real Estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans in process of foreclosure, amount | $ 3,248,000 |  | 3,009,000
OREO Received in Full or Partial Satisfaction of Loans | Residential Real Estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Foreclosed assets and other real estate owned | 873,000 |  | 853,000
Real Estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | 12,887,917,000 |  | 12,581,262,000
Real Estate | OREO Received in Full or Partial Satisfaction of Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Balance prior to TDR | 0 |  |
Single family residential | Real Estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | 2,589,831,000 |  | 2,546,115,000
Financing receivable, collateral dependent, amount | $ 7,206,000 |  | 0
Commercial real estate | Real Estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of loans with subsequent default | loan | 0 | 0 |
Paycheck Protection Program Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 7,800,000 |  | $ 8,900,000

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