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Summary of Significant Accounting Policies - Schedule of Fair Value of Financial Assets and Liabilities Measured on Recurring Basis (Details) - Recurring - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Fair Value    
Total assets measured at fair value $ 15,820 $ 14,669
Warrant liability 36 31
Total liabilities measured at fair value 36 31
Level 1    
Fair Value    
Total assets measured at fair value 15,820 14,669
Level 3    
Fair Value    
Warrant liability 36 31
Total liabilities measured at fair value 36 31
Money market funds    
Fair Value    
Money market funds 15,820 14,669
Money market funds | Level 1    
Fair Value    
Money market funds $ 15,820 $ 14,669