Income Taxes - Schedule of Income Taxes (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Taxes at statutory income tax rate									$ 1,763,394	$ 1,428,272	$ 1,238,752
Reductions in taxes resulting from exempt income									(547,556)	(540,861)	(454,779)
Other timing differences									(63,362)	(60,247)	(44,416)
Total income taxes	$ 280,000	$ 299,000	$ 259,000	$ 314,000	$ 206,000	$ 205,000	$ 216,000	$ 200,000	$ 1,152,476	$ 827,164	$ 739,557
Taxes at statutory income tax rate, percentage									34.00%	34.00%	34.00%
Reductions in taxes resulting from exempt income, percentage									(10.60%)	(12.90%)	(12.50%)
Other timing differences, percentage									(1.20%)	(1.40%)	(1.20%)
Total income taxes, percentage									22.20%	19.70%	20.30%