Revenue and Deferred Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020	Aug. 31, 2019
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 111,000		$ 111,000		$ 250,000
Research and Development Activties | Biotechnology company
Deferred Revenue Arrangement [Line Items]
Deferred revenue							$ 900,000
Grant | NH Grant
Deferred Revenue Arrangement [Line Items]
Deferred revenue						$ 900,000		$ 1,100,000
Revenue recognized	$ 10,000	$ 100,000	$ 200,000	$ 300,000