Income Taxes - Schedule of Income Taxes (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Taxes at statutory income tax rate									$ 1,116,262	$ 1,845,313	$ 1,763,394
Reductions in taxes resulting from exempt income									(272,486)	(524,347)	(547,556)
Other timing differences									(175,360)	298,934	(63,362)
Total income taxes	$ 253,000	$ 209,000	$ 207,000	$ (1,000)	$ 735,000	$ 261,000	$ 316,000	$ 308,000	$ 668,416	$ 1,619,900	$ 1,152,476
Taxes at statutory income tax rate, percentage									21.00%	34.00%	34.00%
Reductions in taxes resulting from exempt income, percentage									(5.10%)	(9.70%)	(10.60%)
Other timing differences, percentage									(3.30%)	5.50%	(1.20%)
Total income taxes, percentage									12.60%	29.80%	22.20%