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Summary of Significant Accounting Policies - Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Dec. 31, 2023
Goodwill |  |
Goodwill, beginning of period | $ 305,125 | $ 304,750
Additions | 106,276 | 375
Goodwill, end of period | 411,401 | 305,125
Core Deposit and Other Intangibles |  |
Intangible assets, beginning of period | 5,978 | 5,869
Additions | 37,462 | 375
Amortization | (1,302) | (266)
Intangible assets, end of period | 42,138 | 5,978
Total |  |
Goodwill and intangible assets, beginning of period | 311,103 | 310,619
Additions | 143,738 | 750
Amortization | (1,302) | (266)
Goodwill and intangible assets, end of period | $ 453,539 | $ 311,103

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