Consolidated Statements of Stockholders' Equity - USD ($)	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Balance, beginning of period at Dec. 31, 2014	$ 10,473,751	$ 48,815	$ 5,041,438	$ (6,629)	$ 5,492,427
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accrued dividends payable	(194,345)				(194,345)
Net unrealized holding loss	(2,728)			(2,728)
Proceeds from options exercised	69,340	380	68,960
Net income	1,044,304				1,044,304
Balance, end of period at Dec. 31, 2015	11,390,322	49,195	5,110,398	(9,357)	6,342,386
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accrued dividends payable	(49,416)				(49,416)
Net unrealized holding loss	(15,556)			(15,556)
Proceeds from options exercised	82,569	628	81,941
Net income	2,835,200
Balance, end of period at Dec. 31, 2016	$ 14,243,119	$ 49,823	$ 5,192,339	$ (24,913)	$ 9,128,170