CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income
Interest and fees on loans	$ 252,097	$ 284,959	$ 304,193
Interest and dividends on investment securities:
Taxable interest income	41,787	35,364	41,090
Non-taxable interest income	3,765	4,552	4,631
Other interest income	1,151	1,723	6,320
Total interest income	298,800	326,598	356,234
Interest expense
Deposits	12,583	30,691	55,077
Federal funds purchased and securities sold under agreements to repurchase	227	660	2,348
Short-term borrowings	279	234	1,041
Long-term debt	657	525	2,608
Senior notes	1,598	1,598	1,599
Subordinated notes	9,918	6,995	2,924
Junior subordinated debt owed to unconsolidated trusts	2,840	2,960	3,414
Total interest expense	28,102	43,663	69,011
Net interest income	270,698	282,935	287,223
Provision for credit losses	(15,101)	38,797	10,406
Net interest income after provision for credit losses	285,799	244,138	276,817
Noninterest income
Income on bank owned life insurance	5,166	5,380	5,795
Net gains (losses) on sales of securities	29	1,724	741
Unrealized gains (losses) recognized on equity securities	3,041	(393)	(759)
Other income	10,292	8,356	8,048
Total noninterest income	132,804	118,265	116,415
Noninterest expense
Salaries, wages, and employee benefits	145,312	126,719	140,473
Data processing	21,862	16,426	21,511
Net occupancy expense of premises	18,346	17,607	18,176
Furniture and equipment expenses	8,301	9,550	9,506
Professional fees	7,549	8,396	11,104
Amortization of intangible assets	11,274	10,008	9,547
Interchange expense	5,792	4,810	4,141
Other expense	43,344	40,681	44,336
Total noninterest expense	261,780	234,197	258,794
Income before income taxes	156,823	128,206	134,438
Income taxes	33,374	27,862	31,485
Net income	$ 123,449	$ 100,344	$ 102,953
Basic earnings per common share (in dollars per share)	$ 2.23	$ 1.84	$ 1.88
Diluted earnings per common share (in dollars per share)	2.20	1.83	1.87
Dividends declared per share of common stock (in dollars per share)	$ 0.92	$ 0.88	$ 0.84
Wealth management fees
Noninterest income
Non-interest income	$ 53,086	$ 42,928	$ 38,561
Fees for customer services
Noninterest income
Non-interest income	35,604	31,604	36,683
Payment technology solutions
Noninterest income
Non-interest income	18,347	15,628	15,643
Mortgage revenue
Noninterest income
Mortgage revenue	$ 7,239	$ 13,038	$ 11,703