v3.22.2.2
Vessels (Details Narrative) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Dec. 21, 2020
Property, Plant and Equipment [Line Items]            
Seller's credit $ 23,059   $ 23,059   $ 23,163  
Short-term receivable of seller's credit 12,871   12,871   12,741  
Finance Lease, Liability 3,702   3,702   4,193  
Loss on sale of vessels 299 $ (5,817) 299 $ (5,817)    
Operating Lease, Right-of-Use Asset 73,511   73,511   88,573  
Operating Lease, Liability, Current 25,763   25,763   29,749  
Operating Lease, Liability, Noncurrent 47,748   47,748   $ 58,824  
Sublease Income 16,944 $ 2,372 $ 24,051 7,825    
Eurochampion 2004 and Euronike [Member]            
Property, Plant and Equipment [Line Items]            
Sale Leaseback Transaction, Date     December 21, 2017      
Sale Leaseback Transaction, Lease Terms     five-year      
Sale Leaseback Transaction, Net Proceeds, Investing Activities     $ 65,200      
Seller's credit 13,000   13,000      
Short-term receivable of seller's credit 12,871   $ 12,871      
Lease Expiration Date     Dec. 21, 2022      
Operating Lease, Right-of-Use Asset $ 3,664   $ 3,664      
Operating Lease, Weighted Average Discount Rate, Percent 5.45%   5.45%      
Operating Lease, Weighted Average Remaining Lease Term 5 months 23 days   5 months 23 days   11 months 19 days  
Archangel and Alaska [Member]            
Property, Plant and Equipment [Line Items]            
Sale Leaseback Transaction, Date     January 9, 2020      
Sale Leaseback Transaction, Lease Terms     five-year      
Sale Leaseback Transaction, Net Proceeds, Investing Activities     $ 61,070      
Seller's credit $ 11,800   11,800      
Long-term receivable of seller's credit 11,048   11,048      
Operating Lease, Right-of-Use Asset $ 23,266   $ 23,266      
Operating Lease, Weighted Average Discount Rate, Percent 3.59%   3.59%      
Operating Lease, Weighted Average Remaining Lease Term 2 years 6 months 10 days   2 years 6 months 10 days   3 years 7 days  
Sakura Princess [Member]            
Property, Plant and Equipment [Line Items]            
Sale Leaseback Transaction, Date     December 21, 2020      
Sale Leaseback Transaction, Lease Terms     five-year      
Sale Leaseback Transaction, Net Proceeds, Investing Activities     $ 24,527      
Seller's credit $ 4,425   4,425      
Long-term receivable of seller's credit 4,247   4,247      
Finance Lease, Liability           $ 5,148
Operating Lease, Right-of-Use Asset $ 10,075   $ 10,075      
Operating Lease, Weighted Average Discount Rate, Percent 2.54%   2.54%      
Operating Lease, Weighted Average Remaining Lease Term 3 years 5 months 23 days   3 years 5 months 23 days   3 years 11 months 19 days  
Operating Lease, Liability, Current $ 1,014   $ 1,014   $ 997  
Operating Lease, Liability, Noncurrent 2,688   2,688   3,196  
Operating Lease, Liability 3,702   $ 3,702   $ 4,193  
Arctic and Antarctic [Member]            
Property, Plant and Equipment [Line Items]            
Sale Leaseback Transaction, Date     June 21, 2021      
Sale Leaseback Transaction, Lease Terms     five-year      
Sale Leaseback Transaction, Net Proceeds, Investing Activities     $ 52,304      
Seller's credit 8,415   8,415      
Long-term receivable of seller's credit 7,764   7,764      
Loss on sale of vessels       1,696    
Operating Lease, Right-of-Use Asset $ 36,506   $ 36,506      
Operating Lease, Weighted Average Discount Rate, Percent 2.98%   2.98%      
Operating Lease, Weighted Average Remaining Lease Term 3 years 11 months 26 days   3 years 11 months 26 days   4 years 5 months 26 days  
Tenergy [member]            
Property, Plant and Equipment [Line Items]            
Sale Leaseback Transaction, Date     December 21, 2021      
Sale Leaseback Transaction, Lease Terms     ten-year      
Vessel delivery date     January 12, 2022      
Property, Plant and Equipment, Additions     $ 186,201      
Proteas [Member]            
Property, Plant and Equipment [Line Items]            
Gain on sale of vessels     $ 299      
Maya Vessel [Member]            
Property, Plant and Equipment [Line Items]            
Loss on sale of vessels       $ 4,121