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, 2012	$ 23,937,267	$ 63,752	$ 0	$ 69,594,390	$ 0	$ (45,720,875)
Balance (in shares) at Dec. 31, 2012		63,751,857
Issuance of common stock - options exercises	46,221	$ 155	0	46,066
Issuance of common stock - options exercises (in shares)		155,500
Issuance of common stock - restricted	87,143	$ 0	0	87,143	0	0
Stock compensation expense	139,892	0	0	139,892	0	0
Foreign currency translation - gain (loss)	0
Net loss	(1,694,785)	0	0	0	0	(1,694,785)
Balance at Dec. 31, 2013	22,515,738	$ 63,907	0	69,867,491	0	(47,415,660)
Balance (in shares) at Dec. 31, 2013		63,907,357
Issuance of common stock - options exercises	462,218	$ 760	0	461,458
Issuance of common stock - options exercises (in shares)		760,399
Issuance of common stock - restricted	87,143	$ 0	0	87,143	0	0
Issuance of common stock - public offering	22,024,760	$ 16,990		22,007,770	0	0
Issuance of common stock - public offering (in shares)		16,989,007
Stock compensation expense	237,138	$ 0	0	237,138	0	0
Foreign currency translation - gain (loss)	(147,515)				(147,515)
Net loss	(8,400,626)	0	0	0	0	(8,400,626)
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
Issuance of common stock - options exercises	701,705	$ 864	0	700,841	0	0
Issuance of common stock - options exercises (in shares)		863,933
Issuance of common stock - restricted	87,144	$ 0	0	87,144	0	0
Stock compensation expense	212,193	0	0	212,193	0	0
Foreign currency translation - gain (loss)	(122,625)				(122,625)
Net loss	(5,466,607)	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