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Goodwill and Other Intangible Assets - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill			$ 1,319,598,000	$ 1,146,007,000
Goodwill increase			173,600,000
Goodwill impairment	$ 0	$ 0
Amortization of intangibles			$ 15,915,000	13,494,000	$ 13,495,000
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			$ 14,346,000	12,122,000	12,100,000
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			$ 1,569,000	$ 1,374,000	$ 1,400,000