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Goodwill and Other Intangible Assets - Summary of Finite-Lived Intangible Assets (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Finite-Lived Intangible Assets, Net [Abstract]    
Gross Carrying Amount $ 90,162 $ 90,162
Accumulated Amortization (74,924) (71,367)
Net Carrying Amount 15,238 18,795
Core deposit intangibles    
Finite-Lived Intangible Assets, Net [Abstract]    
Gross Carrying Amount 82,492 82,492
Accumulated Amortization (71,046) (68,383)
Net Carrying Amount 11,446 14,109
Customer relationship intangible    
Finite-Lived Intangible Assets, Net [Abstract]    
Gross Carrying Amount 7,670 7,670
Accumulated Amortization (3,878) (2,984)
Net Carrying Amount $ 3,792 $ 4,686