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Goodwill and Intangible Assets - Schedule of Intangible Assets and Goodwill (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Goodwill And Intangible Assets [Line Items]    
Goodwill $ 233,709 $ 233,709
Gross Carrying Amount 93,962 90,920
Accumulated Amortization (67,562) (58,862)
Net Carrying Amount 26,400 32,058
Core deposit intangibles    
Goodwill And Intangible Assets [Line Items]    
Gross Carrying Amount 43,578 43,578
Accumulated Amortization (37,490) (35,347)
Net Carrying Amount 6,088 8,231
Software intangible assets    
Goodwill And Intangible Assets [Line Items]    
Gross Carrying Amount 16,932 16,932
Accumulated Amortization (9,877) (6,702)
Net Carrying Amount 7,055 10,230
Other intangible assets    
Goodwill And Intangible Assets [Line Items]    
Gross Carrying Amount 33,452 30,410
Accumulated Amortization (20,195) (16,813)
Net Carrying Amount $ 13,257 $ 13,597