Loans and Allowance for Loan Losses - Schedule of Allowance for Loan Losses Methodology (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Beginning balance	$ 2,844,903	$ 3,100,000
Charge-offs	22,820	796,852
Recoveries	16,485	96,755
Net charge-offs	6,335	700,097
Provisions charged to operations	105,000	445,000
Individually evaluated for impairment	532,560	245,811
Collectively evaluated for impairment	2,411,382	2,599,092
Balance at end of period	2,943,568	2,844,903
Individually evaluated for impairment	6,743,998	6,084,176
Collectively evaluated for impairment	201,043,775	198,082,940
Balance at end of period	204,816,113	201,292,113
Commercial, Financial, And Agricultural [Member]
Beginning balance	309,946	392,222
Charge-offs	14,357	285,710
Recoveries	4,763	59,909
Net charge-offs	9,594	225,801
Provisions charged to operations	40,090	143,525
Individually evaluated for impairment	229,354	33,238
Collectively evaluated for impairment	111,088	276,708
Balance at end of period	340,442	309,946
Individually evaluated for impairment	249,751	53,634
Collectively evaluated for impairment	37,736,056	40,453,168
Balance at end of period	37,985,807	40,506,802
Construction Real Estate [Member]
Beginning balance	1,032,053	1,122,650
Charge-offs	0	248,637
Recoveries	0	0
Net charge-offs	0	248,637
Provisions charged to operations	35,021	158,040
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	1,067,074	1,032,053
Balance at end of period	1,067,074	1,032,053
Individually evaluated for impairment	221,252	224,502
Collectively evaluated for impairment	17,049,321	16,764,315
Balance at end of period	17,270,573	16,988,817
Commercial Real Estate [Member]
Beginning balance	1,047,292	1,046,827
Charge-offs	0	9,439
Recoveries	2,000	10,716
Net charge-offs	(2,000)	(1,277)
Provisions charged to operations	53	(812)
Individually evaluated for impairment	156,695	70,040
Collectively evaluated for impairment	892,650	977,252
Balance at end of period	1,049,345	1,047,292
Individually evaluated for impairment	2,219,814	1,943,134
Collectively evaluated for impairment	73,578,998	68,116,276
Balance at end of period	75,798,812	70,059,410
Residential Real Estate [Member]
Beginning balance	284,603	365,455
Charge-offs	0	241,176
Recoveries	6,202	19,283
Net charge-offs	(6,202)	221,893
Provisions charged to operations	29,073	141,041
Individually evaluated for impairment	146,511	137,040
Collectively evaluated for impairment	173,367	147,563
Balance at end of period	319,878	284,603
Individually evaluated for impairment	3,926,127	3,778,183
Collectively evaluated for impairment	57,774,902	58,655,156
Balance at end of period	61,701,029	62,433,339
Agricultural Real Estate [Member]
Beginning balance	0	0
Charge-offs	0	0
Recoveries	0	0
Net charge-offs	0	0
Provisions charged to operations	0	0
Individually evaluated for impairment	0	0
Collectively evaluated for impairment	0	0
Balance at end of period	0	0
Individually evaluated for impairment	115,216	74,081
Collectively evaluated for impairment	11,331,810	10,095,170
Balance at end of period	11,447,026	10,169,251
Consumer & Other [Member]
Beginning balance	171,009	172,846
Charge-offs	8,463	11,890
Recoveries	3,520	6,847
Net charge-offs	4,943	5,043
Provisions charged to operations	763	3,206
Individually evaluated for impairment	0	5,493
Collectively evaluated for impairment	166,829	165,516
Balance at end of period	166,829	171,009
Individually evaluated for impairment	11,838	10,642
Collectively evaluated for impairment	3,572,688	3,998,855
Balance at end of period	$ 3,584,526	$ 4,009,497