Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Related Party Transactions - Cambridge Purchase Agreement (Details) - USD ($) $ in Thousands	Dec. 15, 2021	Apr. 13, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2017	Dec. 31, 2016	Dec. 15, 2016
Related Party Transaction [Line Items]
Interest payable			$ 703	$ 289
Convertible debt
Related Party Transaction [Line Items]
Related party debt						$ 107,000
Amount of convertible debt converted		$ 10,000
Convertible debt \| Cambridge purchase agreement
Related Party Transaction [Line Items]
Related party debt					$ 10,000
Amount of convertible debt converted	$ 5,000	5,000
Convertible notes payable		$ 5,000	10,000
Interest payable			$ 138
Convertible debt \| Cambridge purchase agreement \| Affiliated Entity
Related Party Transaction [Line Items]
Related party debt							$ 10,000