Leases - Supplemental Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Leases [Abstract]
Property and equipment	$ 471	$ 484
Accumulated depreciation	$ (471)	$ (453)
Finance lease, right-of-use asset, statement of financial position [Extensible List]	Property and equipment, net	Property and equipment, net
Property and equipment, net	$ 0	$ 31
Finance lease, liability, current, statement of financial position [Extensible List]	Accruals and other current liabilities	Accruals and other current liabilities
Accruals and other current liabilities	$ 48	$ 98
Total financing lease liabilities	$ 48	$ 98