Annual report pursuant to Section 13 and 15(d)

Shareholders' Equity - Restricted Stock Units (Details)

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Shareholders' Equity - Restricted Stock Units (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Restricted Stock Units    
Number of Restricted Stock Units    
Balance at the beginning of period (in Shares) 3,627,081 3,499,104
Issued (in shares) 1,729,500 5,978,269
Forfeited (in Shares) (418,846) (577,942)
Vested (in Shares) (2,194,970) (5,272,350)
Balance at the end of period (in Shares) 2,742,765 3,627,081
Weighted Average Grant Date Fair Value    
Balance at the beginning of period (in dollars per share) $ 0.37 $ 0.38
Issued (in dollars per share) 0.06 0.38
Forfeited (in dollars per share) 0.34 0.39
Vested (in dollars per share) 0.28 0.38
Balance at the end of period (in dollars per share) $ 0.25 $ 0.37
Restricted Stock Units Additional Disclosure    
Share-based compensation expense net $ 1,539 $ 1,733
Expense to be recognized $ 535  
Expenses to be recognized (in years) 11 months 8 days  
Performance awards milestone payments    
Restricted Stock Units Additional Disclosure    
Share-based compensation expense net $ 862 $ 372