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Balance Sheet Components - Summary of Accrued and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]    
Accrued expenses $ 2,726 $ 1,971
Current portion of lease liabilities $ 510 $ 395
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Liabilities Current Liabilities Current
Short term interest payable $ 275 $ 274
Other accrued liabilities 655 446
Total accrued and other current liabilities $ 4,166 $ 3,086