CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest income:
Loans, including fees	$ 47,510,761	$ 42,778,193	$ 136,296,125	$ 126,441,555
Securities:
Taxable	3,469,311	3,538,446	10,817,854	10,860,146
Tax-exempt	1,533,029	1,601,067	4,694,438	4,741,440
Federal funds sold and other	268,455	259,536	828,335	834,748
Total interest income	52,781,556	48,177,242	152,636,752	142,877,889
Interest expense:
Deposits	2,435,426	2,708,376	7,512,428	9,076,757
Securities sold under agreements to repurchase	38,702	55,601	100,546	204,240
Federal Home Loan Bank advances and other borrowings	770,367	840,318	2,352,501	2,666,721
Total interest expense	3,244,495	3,604,295	9,965,475	11,947,718
Net interest income	49,537,061	44,572,947	142,671,277	130,930,171
Provision for loan losses	851,194	684,956	1,593,180	5,631,408
Net interest income after provision for loan losses	48,685,867	43,887,991	141,078,097	125,298,763
Noninterest income:
Service charges on deposit accounts	2,912,617	2,797,342	8,669,229	7,818,452
Investment services	2,353,118	1,955,652	6,645,362	5,643,690
Insurance sales commissions	1,037,043	1,021,430	3,566,835	3,522,430
Gain on mortgage loans sold, net	1,352,976	1,326,469	4,256,451	5,130,411
Loss on sale of investment securities, net	29,221	(1,441,234)	29,221	(1,466,475)
Trust fees	1,109,278	931,543	3,326,877	2,756,079
Other noninterest income	4,094,200	4,796,079	11,724,284	11,210,770
Total noninterest income	12,888,453	11,387,281	38,218,259	34,615,357
Noninterest expense:
Salaries and employee benefits	21,721,663	21,009,680	65,244,092	61,152,789
Equipment and occupancy	6,477,076	5,412,865	18,103,458	15,730,074
Other real estate expense	417,197	699,211	1,294,355	2,810,779
Marketing and other business development	945,805	720,866	2,919,696	2,498,708
Postage and supplies	569,707	581,433	1,674,515	1,690,588
Amortization of intangibles	236,163	246,675	711,514	1,015,848
Other noninterest expense	3,991,944	4,652,161	11,959,708	11,725,844
Total noninterest expense	34,359,555	33,322,891	101,907,338	96,624,630
Income before income taxes	27,214,765	21,952,381	77,389,018	63,289,490
Income tax expense	9,017,943	7,305,431	25,655,089	20,883,883
Net income	$ 18,196,822	$ 14,646,950	$ 51,733,929	$ 42,405,607
Per share information:
Basic net income per common share (in dollars per share)	$ 0.52	$ 0.43	$ 1.49	$ 1.24
Diluted net income per common share (in dollars per share)	$ 0.52	$ 0.42	$ 1.48	$ 1.23
Weighted average shares outstanding:
Basic (in shares)	34,762,206	34,282,899	34,688,064	34,148,562
Diluted (in shares)	35,155,224	34,606,567	35,069,764	34,415,776