Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity and Capital Stock - addl information (Details)

v3.20.2
Shareholders' Equity and Capital Stock - addl information (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Aug. 04, 2020
USD ($)
Dec. 15, 2019
shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
shares
Jun. 30, 2020
USD ($)
$ / shares
shares
Jun. 30, 2019
USD ($)
shares
Jun. 30, 2020
$ / shares
Mar. 31, 2020
shares
Dec. 31, 2019
$ / shares
shares
Sep. 30, 2019
shares
Mar. 31, 2019
shares
Dec. 31, 2018
shares
Sep. 25, 2018
shares
Stockholder's Equity Note [Line Items]                          
Common Stock Shares Issued     160,478,059   160,478,059       160,478,059        
Share Price | $ / shares             $ 0.70            
Payments Of Stock Issuance Costs | $ $ 400                        
Exercise of stock options | $       $ 134                  
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Number     10,824,785   10,824,785       11,076,583        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number     0   0                
Stock based compensation | $     $ 200 $ 200 $ 464 $ 370              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | $         100                
Proceeds from Stock Options Exercised | $         $ 0 $ 134              
Granted, Options         0 0              
RSUs vested but not redeemed (in shares)                   54,431      
RSU's redeemed for common shares   28,686                      
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 1.00   $ 1.00       $ 1.00        
Capital Stock                          
Stockholder's Equity Note [Line Items]                          
Common Stock Shares Issued     160,478,059 159,935,563 160,478,059 159,935,563   160,478,059 160,478,059   159,729,403 159,729,403  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period       206,160                  
Exercise of stock options | $       $ 190                  
Warrants                          
Stockholder's Equity Note [Line Items]                          
Number of securities called by each warrant                         13,062,878
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 0.01   $ 0.01                
In Money Stock Option [Member]                          
Stockholder's Equity Note [Line Items]                          
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options | $     $ 1,100   $ 1,100                
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition         1 year 10 months 24 days                
Restricted Stock Units (RSUs) [Member]                          
Stockholder's Equity Note [Line Items]                          
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options | $     $ 400   $ 400                
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition         1 year 2 months 12 days                
Restricted Stock Units (RSUs) [Member] | Capital Stock                          
Stockholder's Equity Note [Line Items]                          
Number of securities called by each warrant     1   1                
Employee Stock Option [Member]                          
Stockholder's Equity Note [Line Items]                          
Vesting period         5 years                
First Anniversary [Member]                          
Stockholder's Equity Note [Line Items]                          
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Percentage         33.30%                
First Anniversary [Member] | Employee Stock Option [Member]                          
Stockholder's Equity Note [Line Items]                          
Vesting period         3 years                
Second Anniversary [Member]                          
Stockholder's Equity Note [Line Items]                          
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Percentage         33.30%                
Third Anniversary (Member)                          
Stockholder's Equity Note [Line Items]                          
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Percentage         33.40%