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 6 Months Ended
Dec. 05, 2019
Dec. 06, 2018
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Number of Shares            
Non-vested at beginning of period (in shares)         2,945,585  
Granted (in shares)         250,000  
Vested (in shares)         (68,750)  
Forfeited/Cancelled         (118,400)  
Non-vested at end of period (in shares)     3,008,435   3,008,435  
Weighted Average Grant Date Fair Value            
Non-vested at beginning of period (in dollars per share)         $ 0.73  
Granted (in dollars per share)         0.79  
Vested (in dollars per share)         0.96  
Forfeited (in dollars per share)         0.70  
Non-vested at end of period (in dollars per share)     $ 0.73   $ 0.73  
Stock-based compensation     $ 767 $ 793 $ 1,658 $ 1,547
Restricted Stock Units            
Number of Shares            
Granted (in shares) 2,170,585 1,255,000        
Weighted Average Grant Date Fair Value            
Stock-based compensation         600  
Unrecognized compensation expense     $ 1,600   $ 1,600  
Weighted average remaining period for recognition of unrecognized compensation expense         1 year 9 months 14 days