CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest income:
Interest and fees on loans	$ 72,514	$ 79,714
Interest and dividends on taxable investments	22,592	15,175
Interest and dividends on nontaxable investments	2,590	2,776
Total interest income	97,696	97,665
Interest expense:
Interest on deposits	2,565	3,112
Interest on borrowings	221	268
Interest on subordinated notes payable	38	38
Interest on subordinated debt held by unconsolidated subsidiary trusts	0	293
Total interest expense	2,824	3,711
Net interest income	94,872	93,954
Provision for credit losses	906	(5,719)
Net interest income after provision for credit losses	93,966	99,673
Noninterest revenues:
Deposit service fees	16,155	14,080
Mortgage banking	155	688
Other banking services	739	854
Employee benefit services	29,580	26,533
Insurance services	10,409	8,153
Wealth management services	8,633	8,199
Unrealized gain on equity securities	2	24
Total noninterest revenues	65,673	58,531
Noninterest expenses:
Salaries and employee benefits	61,648	57,632
Occupancy and equipment	10,952	11,300
Data processing and communications	12,659	12,391
Amortization of intangible assets	3,732	3,351
Legal and professional fees	3,617	3,034
Business development and marketing	2,743	2,030
Acquisition expenses	299	27
Other expenses	4,157	3,481
Total noninterest expenses	99,807	93,246
Income before income taxes	59,832	64,958
Income taxes	12,777	12,108
Net income	$ 47,055	$ 52,850
Basic earnings per share	$ 0.87	$ 0.98
Diluted earnings per share	$ 0.86	$ 0.97