Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies - Fair Value of Warrant and Derivative Liability (Details)

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Organization and Summary of Significant Accounting Policies - Fair Value of Warrant and Derivative Liability (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2020
USD ($)
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]  
Reclassification of warrants to additional paid-in capital $ (2,897)
Warrant Liability  
Schedule of Organization and Summary of Significant Accounting Policies [Line Items]  
Fair value, beginning of period 320
Issuance of warrants 1,654
Change in fair value 923
Reclassification of warrants to additional paid-in capital $ (2,897)