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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 1,320,799	$ 1,319,598
Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	8 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	15 years
Core Deposit Premium \| Minimum
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	10 years
Core Deposit Premium \| Maximum
Finite-Lived Intangible Assets [Line Items]
Useful life (in years)	15 years

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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