Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest and dividend income:
Loans/leases, including fees	$ 160,160,173	$ 117,465,275	$ 91,235,049
Securities:
Taxable	6,353,413	5,144,336	4,585,300
Nontaxable	13,668,283	11,253,351	9,686,844
Interest-bearing deposits at financial institutions	1,266,530	873,988	393,048
Restricted investment securities	1,092,807	631,049	522,047
Federal funds sold	338,036	149,319	45,447
Total interest and dividend income	182,879,242	135,517,318	106,467,735
Interest expense:
Deposits	30,674,621	13,011,906	6,018,366
Short-term borrowings	271,243	113,981	93,934
Federal Home Loan Bank advances	4,192,510	1,981,593	1,284,212
Other borrowings	3,346,225	2,878,879	3,317,513
Junior subordinated debentures	1,999,058	1,465,678	1,236,933
Total interest expense	40,483,657	19,452,037	11,950,958
Net interest income	142,395,585	116,065,281	94,516,777
Provision for loan/lease losses	12,658,449	8,469,919	7,478,166
Net interest income after provision for loan/lease losses	129,737,136	107,595,362	87,038,611
Noninterest income:
Revenue	224,420,336	165,999,610	137,502,624
Gains on sales of residential real estate loans, net	900,744	408,655	431,313
Gains on sales of government guaranteed portions of loans, net	404,852	1,163,741	3,159,073
Swap fee income	10,787,234	3,094,939	1,708,204
Securities gains (losses), net		(87,885)	4,592,398
Earnings on bank-owned life insurance	1,631,749	1,802,443	1,771,396
Other	3,849,156	3,266,213	2,913,458
Total noninterest income	41,541,094	30,482,292	31,036,875
Noninterest expense:
Salaries and employee benefits	68,994,218	55,722,288	46,317,060
Occupancy and equipment expense	12,883,632	10,938,037	8,404,605
Professional and data processing fees	11,452,084	10,757,057	7,113,443
Acquisition costs	1,795,119	1,068,918	1,400,004
Post-acquisition compensation, transition and integration costs	2,086,386	4,309,565	1,041,169
FDIC insurance, other insurance and regulatory fees	3,594,480	2,752,270	2,549,314
Loan/lease expense	1,543,343	1,163,708	662,299
Net cost and gains/losses on operations of other real estate	2,488,730	1,599	591,303
Advertising and marketing	3,551,822	2,624,951	2,127,566
Bank service charges	1,837,626	1,770,942	1,692,957
Losses on debt extinguishment, net			4,577,668
Correspondent banking expense	820,905	807,077	750,646
CDI amortization	1,692,431	1,000,561	442,850
Other	6,402,643	4,507,724	3,815,028
Total noninterest expense	119,143,419	97,424,697	81,485,912
Net income before income taxes	52,134,811	40,652,957	36,589,574
Federal and state income tax expense (benefit)	9,015,112	4,946,450	8,902,787
Net income	$ 43,119,699	$ 35,706,507	$ 27,686,787
Basic earnings per common share (in dollars per share)	$ 2.92	$ 2.68	$ 2.20
Diluted earnings per common share (in dollars per share)	$ 2.86	$ 2.61	$ 2.17
Weighted average common shares outstanding (in shares)	14,768,687	13,325,128	12,570,767
Weighted average common and common equivalent shares outstanding (in shares)	15,064,730	13,680,472	12,766,003
Cash dividends declared per common share (in dollars per share)	$ 0.24	$ 0.20	$ 0.16
Fiduciary And Trust
Noninterest income:
Revenue	$ 8,707,406	$ 7,187,820	$ 6,164,137
Investment advisory and management services
Noninterest income:
Revenue	4,725,557	3,869,699	2,992,811
Deposit Account
Noninterest income:
Revenue	6,420,237	5,919,317	4,439,455
Debit Card
Noninterest income:
Revenue	3,262,645	2,941,703	1,814,488
Correspondent Clearing
Noninterest income:
Revenue	$ 851,514	$ 915,647	$ 1,050,142