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Loans and Allowance - Narrative (Details) | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Dec. 31, 2021 USD ($) loan | Mar. 31, 2022 USD ($) | Mar. 31, 2021 USD ($) | Jan. 01, 2021 USD ($) | Dec. 31, 2020 USD ($)
Receivables [Abstract] |  |  |  |  |  |  |  |  |
Loans held for sale | $ 9,060,000 |  | $ 9,060,000 |  | $ 11,187,000 |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loans | 11,397,417,000 |  | 11,397,417,000 |  | 9,241,861,000 |  |  |  |
Loans with an origination year of 2021 | 3,037,758,000 |  | 3,037,758,000 |  | 2,456,983,000 |  |  |  |
Loans with an origination year of 2020 | 2,281,070,000 |  | 2,281,070,000 |  | 778,086,000 |  |  |  |
Non-Accrual Loans | 45,970,000 |  | 45,970,000 |  | 43,062,000 |  |  |  |
Interest income recognized on non-accrual loans | 0 | $ 0 | 0 | $ 0 |  |  |  |  |
Individually evaluated for impairment | 88,044,000 |  | 88,044,000 |  | 39,531,000 |  |  |  |
Allowance for credit losses - Loans | 226,275,000 | 199,775,000 | 226,275,000 | 199,775,000 | 195,397,000 | $ 195,984,000 | $ 201,082,000 |  | $ 130,648,000
Allowance for credit losses increased | 30,300,000 |  | 30,900,000 |  |  |  |  |  |
Allowance for credit losses on PCD loans | 16,599,000 |  | 16,599,000 |  |  |  |  |  |
CECL Day 1 non-PCD provision for credit losses | 13,955,000 |  | 13,955,000 |  |  |  |  |  |
Loans charged off | 1,432,000 | 1,719,000 | 1,897,000 | 6,034,000 |  |  |  |  |
Recoveries on loans | $ 1,169,000 | $ 412,000 | $ 2,221,000 | $ 1,106,000 |  |  |  |  |
Standby letters of credit usual term | 2 years |  | 2 years |  |  |  |  |  |
Off-balance sheet commitments | $ 23,300,000 |  | $ 23,300,000 |  |  | $ 20,500,000 |  |  |
CECL Day 1 unfunded commitments provision for credit losses | 2,800,000 |  |  |  |  |  |  |  |
Loan commitments to extend credit |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Amounts of commitments | 4,534,577,000 |  | 4,534,577,000 |  | 3,917,215,000 |  |  |  |
Standby letters of credit |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Amounts of commitments | 38,712,000 |  | 38,712,000 |  | 34,613,000 |  |  |  |
Level One |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Non-Accrual Loans | 9,400,000 |  | 9,400,000 |  |  |  |  |  |
Individually evaluated for impairment | 58,200,000 |  | 58,200,000 |  |  |  |  |  |
Allowance for credit losses - Loans | 16,900,000 |  | 16,900,000 |  |  |  |  |  |
Allowance for credit losses on PCD loans | 16,600,000 |  |  |  |  |  |  |  |
CECL Day 1 non-PCD provision for credit losses |  |  | 14,000,000 |  |  |  |  |  |
Loans charged off | 263,000 |  | 263,000 |  |  |  |  |  |
Recoveries on loans | 324,000 |  | 324,000 |  |  |  |  |  |
CECL Day 1 unfunded commitments provision for credit losses |  |  | 2,800,000 |  |  |  |  |  |
Level One | Loan commitments to extend credit |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Amounts of commitments | 484,000,000 |  | 484,000,000 |  |  |  |  |  |
Level One | Standby letters of credit |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Amounts of commitments | 3,300,000 |  | 3,300,000 |  |  |  |  |  |
Cumulative effect of ASC 326 adoption |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Allowance for credit losses - Loans |  |  |  |  |  |  |  |  | $ 74,055,000
Off-balance sheet commitments |  |  |  |  |  |  |  | $ 20,500,000 |
Past Due |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loans | 46,900,000 |  | 46,900,000 |  | 34,700,000 |  |  |  |
Increase in past due loans |  |  | 12,100,000 |  |  |  |  |  |
60-89 Days Past Due |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loans | 22,857,000 |  | 22,857,000 |  | 7,056,000 |  |  |  |
Increase in past due loans |  |  | 15,800,000 |  |  |  |  |  |
PPP loans |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loans | 32,900,000 |  | 32,900,000 |  | 106,600,000 |  |  |  |
Loans with an origination year of 2021 | 32,800,000 |  | 32,800,000 |  | 100,300,000 |  |  |  |
Loans with an origination year of 2020 | 183,000,000 |  | 183,000,000 |  | 6,300,000 |  |  |  |
PPP loans | Level One |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loans | 14,000,000 |  | 14,000,000 |  |  |  |  |  |
Commercial And Non-Owner-Occupied Commercial Real Estate Loans | 60-89 Days Past Due |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loans |  |  |  |  | $ 20,000,000 |  |  |  |
Number of loans | loan |  |  |  |  | 2 |  |  |  |
Residential |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loans | 1,813,297,000 |  | 1,813,297,000 |  | $ 1,159,127,000 |  |  |  |
Loans with an origination year of 2021 | 518,063,000 |  | 518,063,000 |  | 356,660,000 |  |  |  |
Loans with an origination year of 2020 | 431,584,000 |  | 431,584,000 |  | 104,819,000 |  |  |  |
Non-Accrual Loans | 11,511,000 |  | $ 11,511,000 |  | 9,153,000 |  |  |  |
Percentage of troubled debt restructured loans |  | 76.00% | 100.00% | 65.00% |  |  |  |  |
Mortgage loans with formal foreclosure proceedings | 2,300,000 | $ 3,200,000 | $ 2,300,000 | $ 3,200,000 |  |  |  |  |
Residential | 60-89 Days Past Due |  |  |  |  |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |  |  |  |  |
Loans | $ 1,683,000 |  | $ 1,683,000 |  | $ 4,255,000 |  |  |  |

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