Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenues
Royalty revenue	$ 4,333,500	$ 4,198,500
Grant and contract revenue	2,053,384	84,086
Total revenue	6,386,884	4,282,586
Operating expenses
General and administrative	2,646,329	2,573,311
Research and development	4,088,187	1,420,985
Sales and marketing	997,574	1,076,527
Royalty expense	979,466	934,005
Total operating expenses	8,711,556	6,004,828
Loss from operations	(2,324,672)	(1,722,242)
Other income (expense)
Interest income	3,199	76,599
Interest expense	536,886	0
Gain on foreign exchange	14,129	0
Total other income (expense)	(519,558)	76,599
Loss before income taxes	(2,844,230)	(1,645,643)
Income tax expense	0	39,000
Net loss	(2,844,230)	(1,684,643)
Other comprehensive loss:
Foreign currency translation adjustment	12,501	(293,491)
Comprehensive loss	$ (2,831,729)	$ (1,978,134)
Net loss per share of common stock:
Basic and diluted (in dollars per share)	$ (0.66)	$ (0.40)
Weighted average shares outstanding used to compute net loss per share:
Basic and diluted (in shares)	4,282,923	4,224,555