Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation and Going Concern (Details)

v3.21.2
Basis of Presentation and Going Concern (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Basis Of Presentation And Going Concerns [Abstract]            
Accumulated deficit $ (113,112)   $ (113,112)   $ (103,721)  
Total current assets 28,017   28,017      
Total current liabilities 10,401   10,401      
Working capital 17,616   17,616      
Net loss (4,742) $ (4,410) (9,391) $ (10,921)    
Cash and cash equivalents 26,379 $ 17,125 26,379 $ 17,125 $ 20,819 [1] $ 20,528
Unrestricted cash $ 10,000   $ 10,000      
[1] Derived from audited consolidated financial statements