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Balance Sheet Account Detail - Accounts Payable and Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Trade accounts payable and other $ 3,303 $ 2,237
Operating lease liability, current portion 229 282
Accrued clinical studies 3,358 1,524
Contract liability 1,504 0
Income taxes payable 342 0
Employee stock option early exercise liability, current portion 249 304
Accounts payable and other accrued liabilities $ 8,985 $ 4,347