Leases - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 09, 2021	Feb. 01, 2021
Operating Leased Assets [Line Items]
Operating lease, expense	$ 1,200,000	$ 5,400,000
Operating lease, rent expense	$ 700,000	$ 700,000
Operating lease, weighted average remaining lease term	3 years 4 months 6 days
Operating lease, weighted average discount rate, percent	8.00%
Rantigen, Germany, Administrative Office One
Operating Leased Assets [Line Items]
Operating lease, monthly payments				$ 2,843
Rantigen, Germany, Administrative Office Two
Operating Leased Assets [Line Items]
Operating lease, monthly payments				$ 1,144
Frankfurt, Germany Office
Operating Leased Assets [Line Items]
Operating lease, monthly payments			$ 9,753