Noninterest Income - Investment Management and Fiduciary Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Total investment management and fiduciary income
Revenue from External Customer [Line Items]
Noninterest income	$ 62,348	$ 48,979	$ 42,450
Trust fees
Revenue from External Customer [Line Items]
Noninterest income	43,725	33,288	27,383
Wealth management and advisory fees
Revenue from External Customer [Line Items]
Noninterest income	$ 18,623	$ 15,691	$ 15,067