Consolidated Statements of Stockholders’ Equity - USD ($)	Total	Common stock	Additional paid-in capital	Accumulated other comprehensive loss	Accumulated deficit
Beginning balance (in shares) at Dec. 31, 2018		11,422,161
Beginning balance at Dec. 31, 2018	$ 6,726,620	$ 1,143	$ 35,791,972	$ (96,728)	$ (28,969,767)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	97,968		97,968
Net loss	(3,051,840)				(3,051,840)
Foreign currency translation adjustments	7,621			7,621
Ending balance (in shares) at Mar. 31, 2019		11,422,161
Ending balance at Mar. 31, 2019	3,780,369	$ 1,143	35,889,940	(89,107)	(32,021,607)
Beginning balance (in shares) at Dec. 31, 2019		19,683,401
Beginning balance at Dec. 31, 2019	440,826	$ 1,968	44,564,674	(102,625)	(44,023,191)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	160,841		160,841
Issuance of common stock (in shares)		3,308,003
Issuance of common stock	$ 5,222,687	$ 331	5,222,356
Issuance of common stock from the exercise of warrants (in shares)	1,699,000	1,699,000
Issuance of common stock from the exercise of warrants	$ 1,665,020	$ 170	1,664,850
Stock options exercised (in shares)		10,149
Stock options exercised	1	$ 1
Net loss	(4,252,248)				(4,252,248)
Foreign currency translation adjustments	(22,944)			(22,944)
Ending balance (in shares) at Mar. 31, 2020		24,700,553
Ending balance at Mar. 31, 2020	$ 3,214,183	$ 2,470	$ 51,612,721	$ (125,569)	$ (48,275,439)