Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Preferred Stock	Common Stock	Accumulated Deficit	Total
Beginning Balance, Amount at Dec. 31, 2012	$ 800,250	$ 23,366,058	$ (11,787,098)	$ 12,379,210
Beginning Balance, Shares at Dec. 31, 2012		19,516,589
Cumulative preferred dividends			(99,000)	(99,000)
Amortization of value of employee stock options		$ 117,118		117,118
Net income			91,097	91,097
Redeemed preferred stock	(800,250)			(800,250)
Exercise of employee stock options, Amount		$ 39,975		39,975
Exercise of employee stock options, Shares		68,500
Issurance cost of preferred stock		$ (24,750)		(24,750)
Ending Balance, Amount at Dec. 31, 2013	$ 0	$ 23,498,401	(11,795,001)	11,703,400
Ending Balance, Shares at Dec. 31, 2013	0	19,585,089
Amortization of value of employee stock options		$ 48,815		48,815
Net income			1,590,196	1,590,196
Exercise of employee stock options, Amount		$ 105,230		105,230
Exercise of employee stock options, Shares		115,000
Cashless exercise of employee stock options		214,998
Stock issued in exchange for payables, amount		$ 318,208		318,208
Stock issued in exchange for payables, shares		180,000
Ending Balance, Amount at Dec. 31, 2014	$ 0	$ 23,970,654	(10,204,805)	13,765,849
Ending Balance, Shares at Dec. 31, 2014	0	20,095,087
Amortization of value of employee stock options		$ 26,962		26,962
Net income			785,778	785,778
Exercise of employee stock options, Amount	$ 201,386			201,386
Exercise of employee stock options, Shares	270,667
Cashless exercise of employee stock options		360,167
Stock issued in exchange for payables, amount	$ 95,000			95,000
Stock issued in exchange for payables, shares	50,000
Ending Balance, Amount at Dec. 31, 2015	$ 0	$ 24,294,002	$ (9,419,027)	$ 14,874,975
Ending Balance, Shares at Dec. 31, 2015	0	20,775,921