Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Total	Common Stock [Member]	Stock Warrants [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Balance at Dec. 31, 2014	$ 36,778,856	$ 81,657	$ 0	$ 92,661,000	$ (147,515)	$ (55,816,286)
Balance (in shares) at Dec. 31, 2014		81,656,763
Common stock issued under stock plan, option exercises	$ 701,705	$ 864	0	700,841
Common stock issued under stock plan, option exercises (in shares)	863,933	863,933
Stock compensation expense	$ 299,337	$ 0	0	299,337	0	0
Foreign currency translation loss	(122,625)				(122,625)
Net loss	(5,466,607)	0	0	0	0	(5,466,607)
Balance at Dec. 31, 2015	$ 32,190,666	$ 82,521	0	93,661,178	(270,140)	(61,282,893)
Balance (in shares) at Dec. 31, 2015		82,520,696
Common stock issued under stock plan, option exercises (in shares)	0
Stock compensation expense	$ 310,989			310,989
Common stock issued under stock plan, restricted stock award vesting (net of shares withheld for taxes)	(51,863)	$ 209	0	(52,072)	0	0
Common stock issued under stock plan, restricted stock award vesting (net of shares withheld for taxes) (in shares)		209,438
Foreign currency translation loss	(39,229)				(39,229)
Net loss	(4,133,912)	$ 0	0	0	0	(4,133,912)
Balance at Dec. 31, 2016	$ 28,276,651	$ 82,730	$ 0	$ 93,920,095	$ (309,369)	$ (65,416,805)
Balance (in shares) at Dec. 31, 2016		82,730,134