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Loans and Allowance for Credit Losses - Summary of Collateral Dependent Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Jun. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023 | Jun. 30, 2023 | Dec. 31, 2022
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Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance for credit losses | $ (170,263) | $ (147,914) | $ (116,958) | $ (101,085) | $ (110,762) | $ (74,029)
Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 1,073 |  | 7,315 |  |  |
Allowance for credit losses | (140) |  | 0 |  |  |
Real Estate | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 875 |  | 7,315 |  |  |
Business Assets | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 198 |  |  |  |  |
Commercial and industrial loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance for credit losses | (10,445) | (12,103) | (8,877) | (9,995) | (9,551) | (4,831)
Commercial and industrial loans | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 198 |  |  |  |  |
Allowance for credit losses | (140) |  |  |  |  |
Commercial and industrial loans | Real Estate | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 0 |  |  |  |  |
Commercial and industrial loans | Business Assets | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 198 |  |  |  |  |
Real Estate Portfolio Segment | Residential real estate loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance for credit losses | (12,665) | (15,532) | (13,049) | (10,892) | (8,849) | (4,142)
Real Estate Portfolio Segment | Residential real estate loans | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 44 |  | 170 |  |  |
Allowance for credit losses | 0 |  | 0 |  |  |
Real Estate Portfolio Segment | Residential real estate loans | Real Estate | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 44 |  | 170 |  |  |
Real Estate Portfolio Segment | Residential real estate loans | Business Assets | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 0 |  |  |  |  |
Real Estate Portfolio Segment | Commercial real estate loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance for credit losses | (9,090) | (7,319) | (7,441) | (7,408) | (6,952) | (5,470)
Real Estate Portfolio Segment | Commercial real estate loans | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 831 |  | 7,145 |  |  |
Allowance for credit losses | 0 |  | 0 |  |  |
Real Estate Portfolio Segment | Commercial real estate loans | Real Estate | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 831 |  | 7,145 |  |  |
Real Estate Portfolio Segment | Commercial real estate loans | Business Assets | Collateral Dependent Loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Loans individually evaluated | 0 |  |  |  |  |
Construction, land and land development loans |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance for credit losses | (3,552) | (6,110) | (6,386) | (6,671) | (6,539) | (7,425)
Unallocated |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |  |  |  |
Allowance for credit losses | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ (1,165)

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