Revenue from Contracts with Customers - Revenue from External Customers by Products and Services (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue from External Customer [Line Items]
Total noninterest income in-scope of ASC 606	$ 19,574	$ 18,517	$ 57,047	$ 59,009
Total noninterest (loss) income out-of-scope of ASC 606	(417)	1,007	(321,539)	(4,684)
Total noninterest income (loss)	19,157	19,524	(264,492)	54,325
Service charges on deposit accounts
Revenue from External Customer [Line Items]
Total noninterest income in-scope of ASC 606	7,403	6,708	21,117	23,558
Trust and investment advisory fees
Revenue from External Customer [Line Items]
Total noninterest income in-scope of ASC 606	6,235	5,832	18,136	17,967
Debit card processing fees
Revenue from External Customer [Line Items]
Total noninterest income in-scope of ASC 606	3,388	3,249	10,071	9,417
Other noninterest income
Revenue from External Customer [Line Items]
Total noninterest income in-scope of ASC 606	$ 2,548	$ 2,728	$ 7,723	$ 8,067