CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues:
Research and development revenue	$ 1,681,076	$ 1,295,451
Costs and expenses:
Costs of research and development revenue	1,459,701	1,027,278
Research and development	3,087,597	2,101,628
Research and development - related party	868,720	1,215,536
General and administrative	5,519,922	4,522,676
Foreign currency exchange loss (gain), net	27,725	20,778
Total costs and expenses	10,963,665	8,887,896
Loss from operations	(9,282,589)	(7,592,445)
Interest income	984,930	894,532
Loss before income taxes	(8,297,659)	(6,697,913)
Provision for (benefit from) income taxes	10,306	(1,006,157)
Net loss	$ (8,307,965)	$ (5,691,756)
Basic and diluted net loss per common share (USD per share)	$ (0.31)	$ (0.21)
Basic and diluted weighted-average common shares outstanding (in shares)	27,003,695	27,673,300