UNAUDITED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - 3 months ended Apr. 01, 2018 - USD ($)	Total	Preferred Stock	Common Stock	Additional Paid in Capital	Retained Earnings
Stockholders’ equity, December 31, 2017 at Dec. 31, 2017	$ 39,134,679	$ 0	$ 87,594	$ 37,675,329	$ 1,371,756
Stockholders’ equity, December 31, 2017 (in shares) at Dec. 31, 2017			8,759,376
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based compensation	67,029			67,029
Additional shares of common stock available for issuance in the 2013 Long-Term Incentive Plan	(7,500)			(7,500)
Exercise of common stock options	0		$ 46	(46)
Exercise of common stock options and warrants (in shares)			4,589
Cash dividend declared ($0.25 per share)	$ (2,189,844)				(2,189,844)
Common stock, dividends, per share, declared	$ 0.25
Net income (loss)	$ 2,465,571				2,465,571
Stockholders’ equity, April 1, 2018 at Apr. 01, 2018	$ 39,469,935	$ 0	$ 87,640	$ 37,734,812	$ 1,647,483
Stockholders’ equity, April 01, 2018 (in shares) at Apr. 01, 2018			8,763,965