Leases - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Feb. 28, 2018 USD ($) ft²	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Lessee, Lease, Description [Line Items]
Period of base rent abatement	2 months
Base rent abated amount	$ 0.2
Lease costs		$ 0.6	$ 0.6	$ 1.1	$ 1.2
Variable lease payments		$ 0.2	$ 0.3	0.3	0.5
Operating lease, payments				$ 1.2	$ 1.2
California
Lessee, Lease, Description [Line Items]
Leased premises under non cancelable operating lease | ft²	32,974
Lease term	84 months
Lease term extension period		7 years		7 years
California | Maximum
Lessee, Lease, Description [Line Items]
Lease term extension notice period	12 months
California | Minimum
Lessee, Lease, Description [Line Items]
Lease term extension notice period	9 months
California | Other Non-current Assets
Lessee, Lease, Description [Line Items]
Refundable security deposit		$ 0.4		$ 0.4		$ 0.4