Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Interest income:
Loans, including fees		$ 216,138	$ 164,073	$ 137,699
Federal funds sold and interest bearing due from banks		6,018	645	738
Mortgage loans held for sale		190	249	533
Federal Home Loan Bank stock		505	262	253
Investment securities:
Taxable		27,302	11,575	8,432
Tax-exempt		1,499	272	216
Total interest income		251,652	177,076	147,871
Interest expense:
Deposits		16,412	5,627	10,478
Securities sold under agreements to repurchase		567	24	37
Federal funds purchased and other short-term borrowing		154	14	35
Subordinated debentures		1,124	0	0
Federal Home Loan Bank advances		12	337	1,400
Total interest expense		18,269	6,002	11,950
Net interest income		233,383	171,074	135,921
Provision for credit losses		10,257	(753)	18,418
Net interest income after provision expense		223,126	171,827	117,503
Non-interest income:
Mortgage banking income	[1]	3,210	4,724	6,155
Bank owned life insurance	[1]	1,597	914	693
Gain (loss) on sale of premises and equipment	[1]	4,369	(78)	150
Total non-interest income		89,149	65,850	51,899
Non-interest expenses:
Compensation		86,640	63,034	51,368
Employee benefits		16,568	13,479	11,064
Net occupancy and equipment		14,298	9,688	8,182
Technology and communication		14,897	11,145	8,732
Debit and credit card processing		5,909	4,494	2,606
Marketing and business development		5,005	4,150	2,383
Postage, printing and supplies		3,354	2,213	1,778
Legal and professional		2,943	2,583	2,392
FDIC insurance		2,758	1,847	1,217
Amortization of investments in tax credit partnerships		353	367	3,096
Capital and deposit based taxes		2,621	2,090	4,386
Merger expenses		19,500	19,025	0
Federal Home Loans Bank early termination penalty		0	474	0
Intangible amortization		5,544	770	323
Loss on disposition of LFA		870	0	0
Other		10,531	6,921	4,132
Total non-interest expenses		191,791	142,280	101,659
Income before income tax expense		120,484	95,397	67,743
Income tax expense		27,190	20,752	8,874
Net income		93,294	74,645	58,869
Less income attributed to non-controlling interest		322	0	0
Net income available to stockholders		$ 92,972	$ 74,645	$ 58,869
Net income per share - basic (in dollars per share)		$ 3.24	$ 3.00	$ 2.61
Net income per share - diluted (in dollars per share)		$ 3.21	$ 2.97	$ 2.59
Weighted average outstanding shares:
Basic (in shares)		28,672	24,898	22,563
Diluted (in shares)		28,922	25,156	22,768
Fiduciary and Trust [Member]
Non-interest income:
Non-interest income		$ 36,111	$ 27,613	$ 23,406
Deposit Account [Member]
Non-interest income:
Non-interest income		8,286	5,852	4,161
Credit and Debit Card [Member]
Non-interest income:
Non-interest income		18,623	13,456	8,480
Treasury Management [Member]
Non-interest income:
Non-interest income		8,590	6,912	5,407
Investment Advisory, Management and Administrative Service [Member]
Non-interest income:
Non-interest income		3,063	2,553	1,775
Product and Service, Other [Member]
Non-interest income:
Non-interest income		$ 5,300	$ 3,904	$ 1,672

[1] Outside of the scope of ASC 606.