Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Non-vested RSUs (Details)

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Stockholders' Equity - Non-vested RSUs (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Weighted Average Grant Date Fair Value    
Stock-based compensation $ 1,155 $ 1,111
Restricted Stock Units    
Number of Shares    
Non-vested at end of period (in shares) 5,918,496  
Weighted Average Grant Date Fair Value    
Non-vested at end of period (in dollars per share) $ 1.08  
Stock-based compensation $ 500  
Unrecognized compensation expense $ 5,700  
Weighted average remaining period for recognition of unrecognized compensation expense 3 years 1 month 20 days