Restricted Cash - Narratives (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2022	Sep. 30, 2022	Jun. 30, 2021
Restricted Cash
Security given as collateral			$ 4.0
Proceeds received from Bill & Melinda Gates Foundation	$ 4.8
BMGF funds released from restricted cash		$ 4.0

Amount of assets pledged to secure a debt instrument.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823

Name:	us-gaap_DebtInstrumentCollateralAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant