Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Line Items]
Goodwill	$ 901,312	$ 901,312
Net intangible assets	43,285	55,588	$ 69,571
Estimated amortization expense for 2024	11,100
Estimated amortization expense for 2025	10,000
Estimated amortization expense for 2026	8,900
Estimated amortization expense for 2027	7,200
Estimated amortization expense for 2028	4,000
Core Deposits
Goodwill [Line Items]
Net intangible assets	$ 41,200	53,200
Core Deposits | Minimum
Goodwill [Line Items]
Weighted average useful life (in years)	6 years
Core Deposits | Maximum
Goodwill [Line Items]
Weighted average useful life (in years)	11 years
Customer Relationships
Goodwill [Line Items]
Net intangible assets	$ 2,100	$ 2,400