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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock [Member]
Accumulated Deficit [Member]
Total
Balances, beginning of period at Dec. 31, 2021 $ 474,181 $ (459,887) $ 14,294
Balances, beginning of period (in shares) at Dec. 31, 2021 117,189,232    
Shares issued, net of offering costs (Note 6) $ 51   51
Shares issued, net of offering costs (Note 6) (in shares) 50,000    
Shares issued (RSUs vested, net of shares withheld) (Note 6) $ (355)   (355)
Shares issued (RSUs vested, net of shares withheld) (Note 6) (in shares) 886,469    
Stock-based compensation (Note 6) $ 556   556
Net loss   (1,744) (1,744)
Balances, end of period at Jun. 30, 2022 $ 474,433 (461,631) 12,802
Balances, end of period (in shares) at Jun. 30, 2022 118,125,701    
Balances, beginning of period at Mar. 31, 2022 $ 474,298 (460,207) 14,091
Balances, beginning of period (in shares) at Mar. 31, 2022 117,981,100    
Shares issued, net of offering costs (Note 6) $ 51   51
Shares issued, net of offering costs (Note 6) (in shares) 50,000    
Shares issued (RSUs vested, net of shares withheld) (Note 6) $ (28)   (28)
Shares issued (RSUs vested, net of shares withheld) (Note 6) (in shares) 94,601    
Stock-based compensation (Note 6) $ 112   112
Net loss   (1,424) (1,424)
Balances, end of period at Jun. 30, 2022 $ 474,433 (461,631) 12,802
Balances, end of period (in shares) at Jun. 30, 2022 118,125,701    
Balances, beginning of period at Dec. 31, 2022 $ 474,847 (464,818) 10,029
Balances, beginning of period (in shares) at Dec. 31, 2022 118,480,878    
Shares issued, net of offering costs (Note 6) $ 1,013   1,013
Shares issued, net of offering costs (Note 6) (in shares) 1,710,068    
Shares issued (RSUs vested, net of shares withheld) (Note 6) $ (142)   (142)
Shares issued (RSUs vested, net of shares withheld) (Note 6) (in shares) 412,548    
Shares issued (DSUs vested) (Note 6) (in shares) 485,000    
Stock-based compensation (Note 6) $ 427   427
Net loss   (3,474) (3,474)
Balances, end of period at Jun. 30, 2023 $ 476,145 (468,292) 7,853
Balances, end of period (in shares) at Jun. 30, 2023 121,088,494    
Balances, beginning of period at Mar. 31, 2023 $ 475,337 (466,789) 8,548
Balances, beginning of period (in shares) at Mar. 31, 2023 119,727,572    
Shares issued, net of offering costs (Note 6) $ 560   560
Shares issued, net of offering costs (Note 6) (in shares) 875,922    
Shares issued (DSUs vested) (Note 6) (in shares) 485,000    
Stock-based compensation (Note 6) $ 248   248
Net loss   (1,503) (1,503)
Balances, end of period at Jun. 30, 2023 $ 476,145 $ (468,292) $ 7,853
Balances, end of period (in shares) at Jun. 30, 2023 121,088,494