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Goodwill and Other Intangible Assets - Carrying Amounts of Goodwill by Operating Segments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($)
Goodwill [Roll Forward]
Balance at January 1, 2024	$ 991,665
Additions to goodwill and other adjustments	0
Balance at March 31, 2024	991,665
Community Banks
Goodwill [Roll Forward]
Balance at January 1, 2024	988,898
Additions to goodwill and other adjustments	0
Balance at March 31, 2024	988,898
Insurance
Goodwill [Roll Forward]
Balance at January 1, 2024	2,767
Additions to goodwill and other adjustments	0
Balance at March 31, 2024	$ 2,767

X

- Definition

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.

+ References

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+ Details

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X

- Definition

Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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