Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Line Items]
Goodwill	$ 1,320,799,000	$ 1,320,799,000
Goodwill impairment	0	0	$ 0
Amortization of intangibles	$ 15,403,000	16,306,000	15,915,000
Minimum
Goodwill [Line Items]
Useful life (in years)	8 years
Maximum
Goodwill [Line Items]
Useful life (in years)	15 years
Core Deposit Premium
Goodwill [Line Items]
Amortization of intangibles	$ 13,769,000	14,672,000	14,300,000
Core Deposit Premium | Minimum
Goodwill [Line Items]
Useful life (in years)	10 years
Core Deposit Premium | Maximum
Goodwill [Line Items]
Useful life (in years)	15 years
Books of Business Intangible
Goodwill [Line Items]
Amortization of intangibles	$ 1,634,000	$ 1,634,000	$ 1,600,000