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Commitments and Contingencies - Summary of Lease Liabilities and Right-of-Use Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets
Operating	$ 600	$ 636
Financing	3
Total leased assets	603
Liabilities
Operating lease liabilities, current	113	123
Financing lease liabilities, current	3
Operating lease liabilities. noncurrent	503	$ 528
Financing lease liabilities, noncurrent	3
Total lease liabilities	$ 619
Weighted-average remaining lease term (years) - operating leases	6 years 3 months 14 days
Weighted-average remaining lease term (years) - finance leases	2 months 1 day
Weighted-average discount rate - operating leases	7.80%
Weighted-average discount rate - finance leases	5.00%

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