Allowance for Credit Losses - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, collectively evaluated for impairment	$ 8,253,253	$ 7,766,319
Financing receivable, allowance for credit losses, collectively evaluated for impairment	$ 74,882	$ 66,173
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable	Accrued interest receivable
Accrued interest receivable on loans	$ 29,100	$ 24,500
Financing receivable, allowance for credit loss, excluding accrued interest	$ 77,163	$ 70,264	$ 58,047
Financing receivable, allowance for credit loss, excluding accrued interest, percentage of total loans	0.0092	0.0089
Allowance for credit loss, available for sale	$ 0	$ 310	83
Allowance for credit loss, held to maturity	146	107	$ 181
(Benefit) provision for credit loss expense	6,330	227
Debt securities, available-for-sale, excluding accrued interest, allowance for credit loss, writeoff	6,640	0
Debt securities, accrued interest after allowance for credit loss	8,100	8,700
Off-balance sheet, credit loss, liability	2,500	3,000
Off-balance sheet, credit loss, liability, credit loss expense (reversal)	(526)	$ 673
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, individually evaluated for impairment and acquired with deteriorated credit quality	90,600
Financing receivable, allowance for credit losses, individually evaluated for impairment and acquired with deteriorated credit quality	2,300
Debt securities, available-for-sale, excluding accrued interest, allowance for credit loss, writeoff	$ 6,600