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v3.22.1

Loans and Allowance for Credit Losses - Textual (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) loan | Mar. 31, 2021 USD ($) loan | Dec. 31, 2021 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 12,028,593,000 |  | $ 12,012,503,000
Non-credit related discount | 16,700,000 |  | 21,500,000
Financing receivable, accrued interest excluded from amortized costs | 38,400,000 |  | 39,800,000
Nonaccrual loans with no allowance for credit loss | 9,300,000 |  | 14,500,000
Foreclosed assets and other real estate owned | 5,118,000 |  | 6,032,000
Financing receivable, collateral dependent, amount | 99,997,000 |  | 47,089,000
Unfunded commitments, allowance for credit loss | 22,400,000 |  | 22,400,000
Off-balance sheet, credit loss, liability, credit loss expense (reversal) | $ 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 | $ 1,143,000 |  | 1,806,000
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 | 647,000 |  | 831,000
Real Estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | 9,228,990,000 |  | 9,167,250,000
Real Estate | OREO Received in Full or Partial Satisfaction of Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Balance prior to TDR | 0 | $ 0 |
Single family residential | Real Estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | 2,042,978,000 |  | 2,101,975,000
Financing receivable, collateral dependent, amount | $ 1,947,000 |  | 1,838,000
Commercial real estate | Real Estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Number of loans with subsequent default | loan | 0 | 0 |
Other commercial | Real Estate |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 5,762,567,000 |  | 5,738,904,000
Financing receivable, collateral dependent, amount | 87,804,000 |  | 32,849,000
Paycheck Protection Program Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans | $ 61,900,000 |  | $ 116,700,000

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