Consolidated Statements of Changes in Stockholders' Equity (Deficit) - USD ($)	Total	Common Stock	Additional paid-in capital	Accumulated other comprehensive loss	Accumulated deficit
Beginning balance (in shares) at Dec. 31, 2016		6,463,936
Beginning balance at Dec. 31, 2016	$ 2,028,055	$ 6,464	$ 101,581,724	$ (286,272)	$ (99,273,861)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(9,258,647)				(9,258,647)
Other comprehensive income (loss)	72,388			72,388
Issuance of common stock, net of expenses (in shares)		2,421,073
Issuance of common stock, net of expenses	24,989,257	$ 2,421	24,986,836
Exercise of options for common stock (in shares)		8,334
Exercise of options for common stock	27,502	$ 8	27,494
Share based compensation (in shares)		1,751
Share based compensation	122,134	$ 2	122,132
Ending balance (in shares) at Dec. 31, 2017		8,895,094
Ending balance at Dec. 31, 2017	17,980,689	$ 8,895	126,718,186	(213,884)	(108,532,508)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(10,382,059)				(10,382,059)
Other comprehensive income (loss)	(360,302)			(360,302)
Issuance of common stock, net of expenses (in shares)		3,692,307
Issuance of common stock, net of expenses	10,616,046	$ 3,692	10,612,354
Exercise of warrants for common stock, net of expenses (in shares)		2,500,285
Exercise of warrants for common stock, net of expenses	5,116,533	$ 2,501	5,114,032
Share based compensation (in shares)		11,151
Share based compensation	263,396	$ 11	263,385
Ending balance (in shares) at Dec. 31, 2018		15,098,837
Ending balance at Dec. 31, 2018	23,234,303	$ 15,099	142,707,957	(574,186)	(118,914,567)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(13,227,642)				(13,227,642)
Other comprehensive income (loss)	214,026			214,026
Issuance of common stock, net of expenses (in shares)		6,246,360
Issuance of common stock, net of expenses	$ 12,395,348	$ 6,246	12,389,102
Exercise of warrants for common stock, net of expenses (in shares)	83,564	83,564
Exercise of warrants for common stock, net of expenses	$ 272,417	$ 84	272,333
Share based compensation (in shares)		206,604
Share based compensation	872,177	$ 206	871,971
Ending balance (in shares) at Dec. 31, 2019		21,635,365
Ending balance at Dec. 31, 2019	$ 23,760,629	$ 21,635	$ 156,241,363	$ (360,160)	$ (132,142,209)