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Goodwill and Intangible Assets - Schedule of Intangible Assets and Goodwill (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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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

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