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Long-Term Debt, net - Annual loan principal payments (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Disclosure of detailed information about borrowings [line items]    
Loan Balance $ 31,750 $ 37,000
CiT Loan Facility [member]    
Disclosure of detailed information about borrowings [line items]    
Loan Balance 31,750  
EnTrust loan facility [member]    
Disclosure of detailed information about borrowings [line items]    
Loan Balance   37,000
Later than one year and not later than two years [member] | CiT Loan Facility [member]    
Disclosure of detailed information about borrowings [line items]    
Loan Balance 5,000  
Later than one year and not later than two years [member] | EnTrust loan facility [member]    
Disclosure of detailed information about borrowings [line items]    
Loan Balance   5,970
Later than two years and not later than three years [member] | CiT Loan Facility [member]    
Disclosure of detailed information about borrowings [line items]    
Loan Balance 5,000  
Later than three years and not later than four years [member] | CiT Loan Facility [member]    
Disclosure of detailed information about borrowings [line items]    
Loan Balance 5,000  
Later than four years and not later than five years [member] | CiT Loan Facility [member]    
Disclosure of detailed information about borrowings [line items]    
Loan Balance 5,000  
Later than five years [member] | CiT Loan Facility [member]    
Disclosure of detailed information about borrowings [line items]    
Loan Balance $ 11,750  
Later than two years and not later than three years [member] | EnTrust loan facility [member]    
Disclosure of detailed information about borrowings [line items]    
Loan Balance   31,030
Later than three years [member] | EnTrust loan facility [member]    
Disclosure of detailed information about borrowings [line items]    
Loan Balance   $ 0