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Stockholders' Equity - Summary of Option Activity (Details) - $ / shares
shares in Thousands
3 Months Ended
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Stock Option In Canadian Dollars [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Number of Options Outstanding at Beginning       648 648 648
Number of Options Granted       0 0 0
Number of Options Exercised       (648) 0 0
Number of Options Outstanding at Ending       0 648 648
Weighted-average Exercise Price outstanding at Beginning       $ 2.43 $ 2.43 $ 2.43
Weighted-average Exercise Price Granted       0 0 0
Weighted-average Exercise Price Exercised       2.43 0 0
Weighted-average Exercise Price Outstanding at Ending       $ 0 $ 2.43 $ 2.43
Stock Option In Us Dollars [Member]            
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]            
Number of Options Outstanding at Beginning 3,653 2,952 2,952      
Number of Options Granted 0 755 0      
Number of Options Exercised 0 (4) 0      
Number of Options Forfeited   (50)        
Number of Options Outstanding at Ending 3,653 3,653 2,952      
Weighted-average Exercise Price outstanding at Beginning $ 5.34 $ 4.82 $ 4.82      
Weighted-average Exercise Price Granted 0 7.52 0      
Weighted-average Exercise Price Exercised 0 5.91 0      
Weighted-average Exercise Price Forfeited   8.09        
Weighted-average Exercise Price Outstanding at Ending $ 5.34 $ 5.34 $ 4.82