Earnings Per Common Share Diluted EPS (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net Income (Loss) Available to Common Stockholders, Basic	$ 1,819,954	$ 1,477,947	$ 3,550,071	$ 3,106,565
Weighted Average Shares Outstanding (Basic)	2,953,412	2,945,474	2,953,297	2,945,083
Net Income Per Common Share (Basic)	$ 0.62	$ 0.50	$ 1.20	$ 1.05
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities	$ 90,960	$ 75,442	$ 181,920	$ 150,883
Weighted Average Shares Outstanding, Senior Convertible Debentures	303,200	304,200	303,200	304,200
Weighted Average Number Diluted Shares Outstanding Adjustment	2,348	1,152			0
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities	(0.03)	(0.02)	(0.05)	(0.05)
Net Income (Loss) Available to Common Stockholders, Diluted	$ 1,910,914	$ 1,553,389	$ 3,731,991	$ 3,257,448
Weighted Average Shares Outstanding (Diluted)	3,257,017	3,253,559	3,256,929	3,252,332
Net Income Per Common Share (Diluted)	$ 0.59	$ 0.48	$ 1.15	$ 1.00