Composition of Certain Consolidated Financial Statement Items - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Insurance	$ 1,901	$ 2,333
Inventory	539	830
Software	683	428
Rent	252	253
Other	695	398
Total prepaid expenses and other current assets	$ 4,070	$ 4,242

Amount of asset related to consideration paid in advance for insurance that provides economic benefits within a future period of one year or the normal operating cycle, if longer.

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