Liquidity and Capital Resources (Details) - USD ($)		1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 16, 2020	Feb. 29, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Liquidity and Capital Resources
Cash and Cash Equivalents			$ 37,399,801		$ 11,794,526
Investments available-for-sale			11,456,285		14,250,176
Working capital net			46,100,000
Accumulated Deficit			(314,500,003)		(306,516,265)
Net cash used in operating activities			6,538,430	$ 5,423,672
Common shares sold (in shares)		3,670,212
Proceeds from the issuance of common shares		$ 8,000,000	$ 8,147,871	$ 0	$ 5,383,079
Net draw down proceeds	$ 21,200,000