Condensed Consolidated Statements of Stockholders' Equity - USD ($)	Common Stock	Additional Paid-in capital	Accumulated other comprehensive loss	Accumulated deficit	Total
Equity, beginning balance at Dec. 31, 2019	$ 21,023	$ 226,284,548	$ (11,533,778)	$ (90,528,263)	$ 124,243,530
Equity, beginning balance (in shares) at Dec. 31, 2019	21,022,752
Increase (Decrease) in Stockholders' Equity
Exercise of stock options	$ 164	150,785			150,949
Exercise of stock options (in shares)	164,075
Stockbased compensation		2,161,931			2,161,931
Foreign currency translation			(667,870)		(667,870)
Net loss				(25,768,184)	(25,768,184)
Equity, ending balance at Jun. 30, 2020	$ 21,187	228,597,264	(12,201,648)	(116,296,447)	100,120,356
Equity, ending balance (in shares) at Jun. 30, 2020	21,186,827
Equity, beginning balance at Dec. 31, 2019	$ 21,023	226,284,548	(11,533,778)	(90,528,263)	124,243,530
Equity, beginning balance (in shares) at Dec. 31, 2019	21,022,752
Increase (Decrease) in Stockholders' Equity
Foreign currency translation					(836,852)
Net loss					(38,086,266)
Equity, ending balance at Sep. 30, 2020	$ 21,187	229,986,911	(12,370,630)	(128,614,529)	89,022,939
Equity, ending balance (in shares) at Sep. 30, 2020	21,186,827
Equity, beginning balance at Jun. 30, 2020	$ 21,187	228,597,264	(12,201,648)	(116,296,447)	100,120,356
Equity, beginning balance (in shares) at Jun. 30, 2020	21,186,827
Increase (Decrease) in Stockholders' Equity
Stockbased compensation		1,389,647			1,389,647
Foreign currency translation			(168,982)		(168,982)
Net loss				(12,318,082)	(12,318,082)
Equity, ending balance at Sep. 30, 2020	$ 21,187	229,986,911	(12,370,630)	(128,614,529)	89,022,939
Equity, ending balance (in shares) at Sep. 30, 2020	21,186,827
Equity, beginning balance at Dec. 31, 2020	$ 21,187	231,418,356	(10,037,261)	(144,007,075)	77,395,207
Equity, beginning balance (in shares) at Dec. 31, 2020	21,186,827
Increase (Decrease) in Stockholders' Equity
Stockbased compensation		3,686,060			3,686,060
Foreign currency translation			(209,830)		(209,830)
Net loss				(19,919,768)	(19,919,768)
Equity, ending balance at Jun. 30, 2021	$ 21,187	235,104,416	(10,247,091)	(163,926,843)	60,951,669
Equity, ending balance (in shares) at Jun. 30, 2021	21,186,827
Equity, beginning balance at Dec. 31, 2020	$ 21,187	231,418,356	(10,037,261)	(144,007,075)	77,395,207
Equity, beginning balance (in shares) at Dec. 31, 2020	21,186,827
Increase (Decrease) in Stockholders' Equity
Foreign currency translation					(417,438)
Net loss					(29,372,119)
Equity, ending balance at Sep. 30, 2021	$ 21,360	237,227,804	(10,454,699)	(173,379,194)	53,415,271
Equity, ending balance (in shares) at Sep. 30, 2021	21,360,140
Equity, beginning balance at Jun. 30, 2021	$ 21,187	235,104,416	(10,247,091)	(163,926,843)	60,951,669
Equity, beginning balance (in shares) at Jun. 30, 2021	21,186,827
Increase (Decrease) in Stockholders' Equity
Exercise of stock options	$ 94	86,876			86,970
Exercise of stock options (in shares)	93,894
Vesting of restricted stock units	$ 79	(79)
Vesting of restricted stock units (in shars)	79,419
Stockbased compensation		2,036,591			2,036,591
Foreign currency translation			(207,608)		(207,608)
Net loss				(9,452,351)	(9,452,351)
Equity, ending balance at Sep. 30, 2021	$ 21,360	$ 237,227,804	$ (10,454,699)	$ (173,379,194)	$ 53,415,271
Equity, ending balance (in shares) at Sep. 30, 2021	21,360,140