Income Taxes - Schedule of Income Taxes (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Taxes at statutory income tax rate									$ 788,788	$ 594,436	$ 829,584
Reductions in taxes resulting from exempt income									(397,596)	(299,120)	(258,179)
Other timing differences									(10,314)	(8,113)	12,330
Total income taxes	$ 167,000	$ 6,000	$ 4,000	$ 15,000	$ 71,000	$ (75,000)	$ 197,000	$ 94,000	$ 380,878	$ 287,203	$ 583,735
Taxes at statutory income tax rate, percentage									34.00%	34.00%	34.00%
Reductions in taxes resulting from exempt income, percentage									(17.10%)	(17.10%)	(10.60%)
Other timing differences, percentage									(0.40%)	(0.50%)	0.50%
Total income taxes, percentage									16.50%	16.40%	23.90%