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Share Capital (Details Textual)
3 Months Ended
Mar. 14, 2019
USD ($)
$ / shares
shares
Mar. 07, 2017
USD ($)
$ / shares
Mar. 31, 2021
USD ($)
vote
$ / shares
shares
Dec. 31, 2020
USD ($)
shares
Mar. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
shares
Share Capital [Line Items]            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest     $ (405,583,000) $ (408,910,000) $ (183,944,000) $ (190,575,000)
Preferred Stock            
Share Capital [Line Items]            
Proceeds from Issuance of Convertible Preferred Stock $ 98,620,000          
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest   $ 90,123,000 $ 152,746,000 $ 152,746,000 $ 152,746,000 $ 152,746,000
Preferred Stock | Series 4 Convertible Preferred Stock            
Share Capital [Line Items]            
Proceeds from Issuance of Convertible Preferred Stock   $ 95,000        
Preferred Stock, Conversion Price Per Preference Share | $ / shares $ 7.42 $ 10.00        
Preferred Stock, Accretion Percentage, Preference 8.00%          
Preferred Stock, Accretion Rate, Preference Per Share | $ / shares     $ 9.02      
Preferred Stock, Accretion of Redemption Discount     $ 2,571,000      
Preferred Stock, Liquidation Preference, Value     $ 131,110,000      
Preferred Stock, Convertible Preference Shares, Convertible at Company's Option, Term 2 years 5 years        
Shares outstanding (shares) | shares     145,000,000 145,000,000 145,000,000 145,000,000
Preferred Stock, Conversion Basis, Common Stock Class A Closing Trade Price 125.00%          
Preferred Stock, Liquidation Preference Percentage Rate, Change of Control of the Company 7.00%          
Preferred Stock | Series 6 Convertible Preferred Stock            
Share Capital [Line Items]            
Stock Issued During Period, Shares, Issued for Services | shares 50,000          
Proceeds from Issuance of Convertible Preferred Stock $ 50,000,000          
Preferred Stock, Liquidation Preference Per Share | $ / shares $ 1,000 $ 1,000        
Preferred Stock, Conversion Price Per Preference Share | $ / shares $ 5.00          
Preferred Stock, Accretion Percentage, Preference 8.00%          
Preferred Stock, Monthly Accretion of Redemption Discount     $ 7.69      
Preferred Stock, Accretion of Redemption Discount     1,153,000      
Preferred Stock, Liquidation Preference, Value     58,804,000      
Preferred Stock, Convertible Preference Shares, Convertible at Company's Option, Term 2 years 5 years        
Preferred Stock, Conversion Basis, Common Stock Class A Closing Trade Price 125.00%          
Preferred Stock, Dividend Rate, Percentage 7.00%          
Common Stock and Other Paid-in Capital            
Share Capital [Line Items]            
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest     $ 106,193,000 $ 104,367,000 $ 99,587,000 $ 101,469,000
Issuance of common and convertible preference shares $ 35,997          
Common Shares | Common Class A            
Share Capital [Line Items]            
Stock Issued During Period, Shares, Issued for Services | shares 14,285,714          
Proceeds from Issuance of Common Stock $ 50,000,000          
Shares outstanding (shares) | shares     74,787,317 73,529,105    
Common stock, voting rights, number of votes per share | vote     1      
Common Stock, Par or Stated Value Per Share | $ / shares     $ 0      
Common Shares | Common Class B            
Share Capital [Line Items]            
Shares outstanding (shares) | shares     3,743 3,743    
Common stock, voting rights, number of votes per share | vote     20      
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 0      
Contingent Consideration, Liability Settlements [Domain] | Preferred Stock | Series 4 Convertible Preferred Stock            
Share Capital [Line Items]            
Issuance of common and convertible preference shares $ 62,623