Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($)	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Total
Balance at Dec. 31, 2018	$ 17,683	$ 172,436,176	$ 3,669	$ (166,170,020)	$ 6,280,170
Balance (in Shares) at Dec. 31, 2018	17,682,839
Issuance of common stock pursuant to FBR At Market Issuance Sales Agreement	$ 2,529	2,551,618			2,554,147
Issuance of common stock pursuant to FBR At Market Issuance Sales Agreement (in Shares)	2,529,050
Issuance costs associated with FBR At Market Issuance Sales Agreement		(101,277)			(101,277)
Issuance of common stock to vendors	$ 246	205,492			205,738
Issuance of common stock to vendors (in Shares)	245,700
Share-based compensation expense		233,992			233,992
Foreign currency translation adjustment			(11,324)		(11,324)
Net loss				(6,483,931)	(6,483,931)
Balance at Sep. 30, 2019	$ 20,458	175,326,001	(14,993)	(172,653,951)	2,677,515
Balance (in Shares) at Sep. 30, 2019	20,457,589
Balance at Jun. 30, 2019	$ 18,741	173,557,669	(7,008)	(169,933,168)	3,636,234
Balance (in Shares) at Jun. 30, 2019	18,741,210
Issuance of common stock pursuant to FBR At Market Issuance Sales Agreement	$ 1,668	1,710,235			1,711,903
Issuance of common stock pursuant to FBR At Market Issuance Sales Agreement (in Shares)	1,667,698
Issuance costs associated with FBR At Market Issuance Sales Agreement		(68,062)			(68,062)
Issuance of common stock to vendors	$ 49	44,632			44,681
Issuance of common stock to vendors (in Shares)	48,681
Share-based compensation expense		81,527			81,527
Foreign currency translation adjustment			(7,985)		(7,985)
Net loss				(2,720,783)	(2,720,783)
Balance at Sep. 30, 2019	$ 20,458	175,326,001	(14,993)	(172,653,951)	2,677,515
Balance (in Shares) at Sep. 30, 2019	20,457,589
Balance at Dec. 31, 2019	$ 21,753	177,006,004	(45,010)	(175,525,612)	1,457,135
Balance (in Shares) at Dec. 31, 2019	21,753,124
Issuance of common stock pursuant to FBR At Market Issuance Sales Agreement	$ 5,797	12,685,471			12,691,268
Issuance of common stock pursuant to FBR At Market Issuance Sales Agreement (in Shares)	5,797,403
Issuance costs associated with FBR At Market Issuance Sales Agreement		(591,079)			(591,079)
Issuance of common stock for milestone	$ 1,956	4,998,044			5,000,000
Issuance of common stock for milestone (in Shares)	1,956,182
Issuance of common stock to vendors	$ 30	58,970			59,000
Issuance of common stock to vendors (in Shares)	30,000
Exercise of common stock options	$ 6	4,981			4,987
Exercise of common stock options (in Shares)	5,758
Exercise of warrants	$ 305	685,079			685,384
Exercise of warrants (in Shares)	304,821
Share-based compensation expense		211,266			211,266
Foreign currency translation adjustment			35,767		35,767
Net loss				(12,148,257)	(12,148,257)
Balance at Sep. 30, 2020	$ 29,847	195,058,736	(9,243)	(187,673,869)	7,405,471
Balance (in Shares) at Sep. 30, 2020	29,847,288
Balance at Jun. 30, 2020	$ 28,591	191,922,671	(36,951)	(185,883,709)	6,030,602
Balance (in Shares) at Jun. 30, 2020	28,591,432
Issuance of common stock pursuant to FBR At Market Issuance Sales Agreement	$ 1,252	3,230,067			3,231,319
Issuance of common stock pursuant to FBR At Market Issuance Sales Agreement (in Shares)	1,252,287
Issuance costs associated with FBR At Market Issuance Sales Agreement		(165,555)			(165,555)
Exercise of common stock options	$ 4	4,981			4,985
Exercise of common stock options (in Shares)	3,569
Share-based compensation expense		66,572			66,572
Foreign currency translation adjustment			27,708		27,708
Net loss				(1,790,160)	(1,790,160)
Balance at Sep. 30, 2020	$ 29,847	$ 195,058,736	$ (9,243)	$ (187,673,869)	$ 7,405,471
Balance (in Shares) at Sep. 30, 2020	29,847,288