Loans and Allowance for Loan Losses (Details 2) (USD $)	Jun. 30, 2013	Dec. 31, 2012	Dec. 31, 2011
Total	$ 5,094,740	$ 6,141,281	$ 7,400,000
Commercial Real Estate Mortgage [Member]
Total	3,073,000	2,549,000	3,557,000
Consumer Real Estate Mortgage [Member]
Total	1,246,000	1,528,000	2,518,000
Construction and Land Development [Member]
Total	325,000	1,241,000	827,000
Commercial and Industrial Loans [Member]
Total	438,000	809,000	482,000
Consumer and Other Loans [Member]
Total	13,000	14,000	16,000
Performing Loans [Member]
Total	1,865,000	2,095,000
Performing Loans [Member] | Commercial Real Estate Mortgage [Member]
Total	500,000	319,000
Performing Loans [Member] | Consumer Real Estate Mortgage [Member]
Total	966,000	952,000
Performing Loans [Member] | Construction and Land Development [Member]
Total	325,000	781,000
Performing Loans [Member] | Commercial and Industrial Loans [Member]
Total	61,000	29,000
Performing Loans [Member] | Consumer and Other Loans [Member]
Total	13,000	14,000
Impaired Loans [Member]
Total	3,230,000	4,046,000
Impaired Loans [Member] | Commercial Real Estate Mortgage [Member]
Total	2,573,000	2,230,000
Impaired Loans [Member] | Consumer Real Estate Mortgage [Member]
Total	280,000	576,000
Impaired Loans [Member] | Construction and Land Development [Member]
Total	0	460,000
Impaired Loans [Member] | Commercial and Industrial Loans [Member]
Total	377,000	780,000
Impaired Loans [Member] | Consumer and Other Loans [Member]
Total	$ 0	$ 0