Annual report pursuant to Section 13 and 15(d)

Stockholders' deficit, Options Granted and Outstanding (Details)

v3.20.1
Stockholders' deficit, Options Granted and Outstanding (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
May 06, 2019
Dec. 31, 2019
Dec. 31, 2018
Total number of options [Roll Forward]      
Legacy options (in shares)   38,462  
Acquired (in shares)   5,250,000  
Granted (in shares)   2,503,371  
Options outstanding (in shares)   7,791,833 38,462
Weighted average exercise price [Abstract]      
Legacy options (in dollars per share)   $ 6.76  
Acquired (in dollars per share)   1.82  
Granted (in dollars per share)   1.83  
Vested during period (in dollars per share)   1.89  
Options outstanding (in dollars per share)   $ 1.85 $ 6.76
Vested options, number [Abstract]      
Legacy options (in shares)   38,462  
Acquired (in shares)   0  
Granted (in shares)   0  
Vested during period (in shares)   2,678,329  
Options outstanding (in shares)   2,716,791 38,462
Vested options, weighted average exercise price (in dollars per share)   $ 1.89  
Vested options, weighted average remaining contractual term   9 years 3 months 18 days  
Vested options, aggregate intrinsic value   $ 2,357  
Nonvested options, number [Roll Forward]      
Legacy options (in shares)   0  
Acquired (in shares)   5,250,000  
Granted (in shares)   2,503,371  
Vested during period (in shares)   (2,678,329)  
Options outstanding (in shares)   5,075,042 0
Options expected to vest (in shares)   5,075,042  
Non-vested options, weighted average exercise price (in dollars per share)   $ 1.82  
Non-vested options, weighted average remaining contractual term   9 years 7 months 6 days  
Non-vested options, aggregate intrinsic value   $ 4,448  
Weighted average grant date fair value [Abstract]      
Legacy options (in dollars per share)   $ 8.06  
Acquired (in dollars per share)   0.92  
Granted (in dollars per share)   0.97  
Vested during period (in dollars per share)   1.02  
Outstanding options (in dollars per share)   $ 0.97 $ 8.06
Estimated term   3 years  
Stock Options [Member]      
Total number of options [Roll Forward]      
Granted (in shares)     38,462
Weighted average exercise price [Abstract]      
Granted (in dollars per share)     $ 6.76
Nonvested options, number [Roll Forward]      
Granted (in shares)     38,462
2019 Incentive Award Plan [Member]      
Total number of options [Roll Forward]      
Legacy options (in shares)   164,356  
Options outstanding (in shares)   7,753,371 164,356
2019 Incentive Award Plan [Member] | Stock Options [Member]      
Total number of options [Roll Forward]      
Legacy options (in shares)   164,356  
Granted (in shares) 2,503,371    
Options outstanding (in shares)     164,356
Vested options, number [Abstract]      
Options outstanding (in shares)   912,917  
Vested options, weighted average remaining contractual term     1 year 9 months 18 days
Nonvested options, number [Roll Forward]      
Granted (in shares) 2,503,371    
Weighted average grant date fair value [Abstract]      
Share-based compensation expense   $ 10,300 $ 400
Incremental share-based compensation related to option re-pricing   $ 600  
Estimated term   3 years  
Dividend yield   0.00%  
Risk-free rate, minimum   1.41%  
Risk-free rate, maximum   2.39%  
Volatility, minimum   55.00%  
Volatility, maximum   62.10%  
2019 Incentive Award Plan [Member] | Stock Options [Member] | Minimum [Member]      
Weighted average grant date fair value [Abstract]      
Award exercise period   5 years  
Exercise price (in dollars per share)   $ 1.82  
2019 Incentive Award Plan [Member] | Stock Options [Member] | Maximum [Member]      
Weighted average grant date fair value [Abstract]      
Award exercise period   10 years  
Exercise price (in dollars per share)   $ 2.70