CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Revenue, product and service [extensible list]	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember	us-gaap:ServiceMember
Research and development revenue	$ 416,361	$ 454,507	$ 1,256,004	$ 1,247,908
Costs and expenses:
Costs of research and development revenue	266,929	384,803	1,169,351	1,034,934
Provision for contract losses	112,433	0	187,388	0
Research and development	986,054	841,343	2,857,670	2,351,953
Research and development - related party	0	101,849	0	827,632
General and administrative	1,643,493	1,056,196	4,772,117	4,354,941
Foreign currency exchange loss (gain), net	(16,240)	13,727	26,317	24,693
Total costs and expenses	2,992,669	2,397,918	9,012,843	8,594,153
Loss from operations	(2,576,308)	(1,943,411)	(7,756,839)	(7,346,245)
Interest income	76,809	245,027	391,779	777,711
Loss before income taxes	(2,499,499)	(1,698,384)	(7,365,060)	(6,568,534)
Provision for income taxes	0	0	0	900
Net loss	$ (2,499,499)	$ (1,698,384)	$ (7,365,060)	$ (6,569,434)
Basic and diluted net loss per common share (USD per share)	$ (0.09)	$ (0.06)	$ (0.27)	$ (0.24)
Basic and diluted weighted-average common shares outstanding (in shares)	27,482,157	27,181,003	27,467,051	26,909,205