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Fair Value - Measurement of Fair Value of Major Asset and Liability classed (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale investments (Note 8a) $ 1,713 $ 1,712
Available for sale investments (long-term) (b) 32,663 20,579
Total assets 34,388 22,291
Total Liabilities 3,670  
Interest rate cap and interest rate swap | Total derivatives designated as hedging instruments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative instruments (c) 12  
Derivative instruments (c) 3,670  
Level 1    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale investments (Note 8a) 1,713 1,712
Available for sale investments (long-term) (b) 0 0
Total assets 1,713 1,712
Total Liabilities 0  
Level 1 | Interest rate cap and interest rate swap | Total derivatives designated as hedging instruments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative instruments (c) 0  
Derivative instruments (c) 0  
Level 2    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale investments (Note 8a) 0 0
Available for sale investments (long-term) (b) 0 0
Total assets 12 0
Total Liabilities 3,670  
Level 2 | Interest rate cap and interest rate swap | Total derivatives designated as hedging instruments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative instruments (c) 12  
Derivative instruments (c) 3,670  
Level 3    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale investments (Note 8a) 0 0
Available for sale investments (long-term) (b) 0 0
Total assets 0 0
Total Liabilities 0  
Level 3 | Interest rate cap and interest rate swap | Total derivatives designated as hedging instruments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative instruments (c) 0  
Derivative instruments (c) 0  
Fair Value Measured at Net Asset Value Per Share    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Available for sale investments (Note 8a) 0 0
Available for sale investments (long-term) (b) 32,663 20,579
Total assets 32,663 $ 20,579
Total Liabilities 0  
Fair Value Measured at Net Asset Value Per Share | Interest rate cap and interest rate swap | Total derivatives designated as hedging instruments    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative instruments (c) 0  
Derivative instruments (c) $ 0