Consolidated Statement of Stockholders' Equity - USD ($)	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Total
Balance (in shares) at Dec. 31, 2017				11,279,834
Beginning balance at Dec. 31, 2017	$ (516,457)	$ (160,446,612)	$ 5,208,644	$ 56,395		$ 163,106,400	$ 7,408,370
Exercise of warrants (in shares)				18,405
Exercise of warrants				$ 92		55,123	55,215
Net loss		(3,611,973)	(95,474)				(3,707,447)
Unrealized gain on short-term investments	1,924						1,924
Foreign currency translation	(96,837)		(47,198)				(144,035)
Balance (in shares) at Dec. 31, 2018				11,298,239
Ending balance at Dec. 31, 2018	(611,370)	(164,058,585)	5,065,972	$ 56,487		163,161,523	3,614,027
Exercise of warrants (in shares)
Exercise of warrants
Net loss		(3,114,987)	(47,677)				(3,162,664)
Unrealized gain on short-term investments
Foreign currency translation	43,340		21,583				64,923
Balance (in shares) at Dec. 31, 2019				11,298,239
Ending balance at Dec. 31, 2019	$ (568,030)	$ (167,173,572)	$ 5,039,878	$ 56,487		$ 163,161,523	$ 516,286