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Consolidated Statements of Changes in Equity - USD ($)
Total
Common Stock
Deficit
Accumulated other comprehensive income
Total shareholders' equity
Non-controlling interests
Beginning balance ( in shares) at Dec. 31, 2020   134,311,033        
Beginning balance at Dec. 31, 2020 $ 157,546,000 $ 549,317,000 $ (397,812,000) $ 2,308,000 $ 153,813,000 $ 3,733,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net loss (10,910,000)   (10,908,000)   (10,908,000) (2,000)
Other comprehensive income 353,000     353,000 353,000  
Shares Issued For Cash By At The Market Offering Shares   5,534,166        
Shares Issued For Cash By At The Market Offering 30,603,000 $ 30,603,000     30,603,000  
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs 689,000 689,000     689,000  
Share-based compensation 697,000 $ 697,000     697,000  
shares issued for exrcise of stock options (in shares)   278,111        
Shares issued for the vesting of restricted stock units 666,000 $ 666,000     666,000  
Shares issued for the vesting of restricted stock units (in shares)   478,781        
Cash paid to fund employee income tax withholding due upon vesting of restricted stock units (659,000) $ (659,000)     (659,000)  
Shares issued for exercise of warrants (in shares)   190,405        
Shares issued for exercise of warrants 1,105,000 $ 1,105,000     1,105,000  
Shares issued for consulting services (in shares)   (24,000)        
Shares issued for consulting services (95,000) $ (95,000)     (95,000)  
Ending balance (in shares) at Mar. 31, 2021   140,816,496        
Ending balance at Mar. 31, 2021 178,807,000 $ 581,135,000 (408,720,000) 2,661,000 175,076,000 3,731,000
Beginning balance ( in shares) at Dec. 31, 2021   156,262,199        
Beginning balance at Dec. 31, 2021 295,526,000 $ 685,903,000 (396,271,000) 1,943,000 291,575,000 3,951,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net loss (14,730,000)   (14,729,000)   (14,729,000) (1,000)
Other comprehensive income 1,766,000     1,766,000 1,766,000  
Shares Issued For Cash By At The Market Offering Shares   413,751        
Shares Issued For Cash By At The Market Offering 4,260,000 $ 4,260,000     4,260,000  
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs 96,000 96,000     96,000  
Share-based compensation 862,000 $ 862,000     862,000  
shares issued for exrcise of stock options (in shares)   135,926        
Shares issued for the vesting of restricted stock units 328,000 $ 328,000     328,000  
Shares issued for the vesting of restricted stock units (in shares)   362,350        
Cash paid to fund employee income tax withholding due upon vesting of restricted stock units (884,000) $ (884,000)     (884,000)  
Shares issued for consulting services (in shares)   (6,022)        
Shares issued for consulting services (51,000) $ (51,000)     (51,000)  
Ending balance (in shares) at Mar. 31, 2022   157,180,248        
Ending balance at Mar. 31, 2022 $ 287,083,000 $ 690,424,000 $ (411,000,000) $ 3,709,000 $ 283,133,000 $ 3,950,000