Consolidated Statements of Income (unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Loans including fees:
Taxable		$ 124,261	$ 145,417	$ 377,725	$ 432,642
Nontaxable		3,312	3,905	10,390	12,114
Investment securities:
Taxable		23,839	28,884	76,593	86,162
Nontaxable		8,615	7,119	24,909	21,776
Money market and other interest-earning investments		59	528	442	1,140
Total interest income		160,086	185,853	490,059	553,834
Interest Expense
Deposits		5,297	18,707	24,393	53,670
Federal funds purchased and interbank borrowings		12	1,484	1,296	5,219
Securities sold under agreements to repurchase		160	715	729	2,048
Federal Home Loan Bank advances		6,709	9,123	21,321	29,093
Other borrowings		2,335	2,728	7,305	8,430
Total interest expense		14,513	32,757	55,044	98,460
Net interest income		145,573	153,096	435,015	455,374
Provision for loan losses	[1]	0	1,437	39,495	3,483
Net interest income after provision for loan losses		145,573	151,659	395,520	451,891
Noninterest Income
Wealth management fees		9,239	9,160	27,547	27,604
Service charges on deposit accounts		8,698	11,860	26,357	34,201
Debit card and ATM fees		5,276	5,370	15,106	16,292
Mortgage banking revenue		18,110	8,850	46,542	20,996
Investment product fees		5,351	5,244	16,070	16,106
Capital markets income		5,428	4,560	15,935	10,227
Company-owned life insurance		2,830	2,703	8,878	8,602
Debt securities gains (losses), net		4,921	424	10,606	1,486
Other income		4,906	5,790	13,681	16,077
Total noninterest income		64,759	53,961	180,722	151,591
Noninterest Expense
Salaries and employee benefits		69,860	71,729	215,589	214,478
Occupancy		13,930	11,934	42,308	41,071
Equipment		3,754	3,954	12,912	12,945
Marketing		2,140	4,105	7,632	12,267
Data processing		9,628	8,961	28,724	28,509
Communication		2,241	2,349	7,335	8,252
Professional fees		3,083	5,037	10,921	12,868
FDIC assessment		1,319	960	4,942	4,501
Amortization of intangibles		3,459	4,168	10,847	12,965
Amortization of tax credit investments		3,115	1,211	8,917	2,039
Other expense		7,705	8,177	48,972	23,849
Total noninterest expense		120,234	122,585	399,099	373,744
Income before income taxes		90,098	83,035	177,143	229,738
Income tax expense		12,154	13,254	24,854	40,717
Net income		$ 77,944	$ 69,781	$ 152,289	$ 189,021
Net income per common share - basic (in dollars per share)		$ 0.47	$ 0.41	$ 0.92	$ 1.10
Net income per common share - diluted (in dollars per share)		$ 0.47	$ 0.41	$ 0.92	$ 1.09
Weighted average number of common shares outstanding - basic (in shares)		164,773	170,746	165,748	172,807
Weighted average number of common shares outstanding - diluted (in shares)		165,419	171,551	166,370	173,527
Dividends per common share (in dollars per share)		$ 0.14	$ 0.13	$ 0.42	$ 0.39

[1] Beginning January 1, 2020, calculation is based on current expected loss methodology. Prior to January 1, 2020, calculation was based on incurred loss methodology.