Consolidated Statements of Shareholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Balance beginning at Dec. 31, 2015	$ 2,404	$ 111,483,959	$ (102,410,558)	$ 9,075,805
Balance beginning, shares at Dec. 31, 2015	24,043,846
Share-based compensation		67,531		67,531
Net loss			(4,238,410)	(4,238,410)
Balance ending at Dec. 31, 2016	$ 2,404	111,551,490	(106,648,968)	4,904,926
Balance ending, shares at Dec. 31, 2016	24,043,846
Share-based compensation		76,299		76,299
Net loss			(2,413,859)	(2,413,859)
Balance ending at Dec. 31, 2017	$ 2,404	111,627,789	(109,062,827)	2,567,366
Balance ending, shares at Dec. 31, 2017	24,043,846
Share-based compensation		69,309		69,309
Adoption of ASC 606			58,021	58,021
Issuance of capital stock	$ 357	3,026,273		3,026,630
Issuance of capital stock, shares	3,562,809
Exercise of options and warrants	$ 6	64,286		64,292
Exercise of options and warrants, shares	58,556
Net loss			(2,686,128)	(2,686,128)
Balance ending at Dec. 31, 2018	$ 2,767	$ 114,787,657	$ (111,690,934)	$ 3,099,490
Balance ending, shares at Dec. 31, 2018	27,665,211