Commitments and Contingencies (Details) $ in Millions	Jun. 30, 2022 USD ($)
Product Liability Contingency [Line Items]
Other commitments, due in next twelve months	$ 5.8
Drug Supplier Project Plan [Member]
Product Liability Contingency [Line Items]
Other commitments	5.9
Manufacture of Drug Substance [Member]
Product Liability Contingency [Line Items]
Other commitments	2.5
Manufacturer of Prexigebersen [Member]
Product Liability Contingency [Line Items]
Other commitments	2.6
Manufacturing Development [Member]
Product Liability Contingency [Line Items]
Other commitments	0.6
Testing Services [Member]
Product Liability Contingency [Line Items]
Other commitments	$ 0.2