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OTHER LONG TERM ASSETS (Narrative) (Details)
 6 Months Ended 12 Months Ended
Jun. 30, 2022
USD ($)
vessel
Jun. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2021
vessel
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
vessel
Property, Plant and Equipment [Line Items]            
Number of vessels for which costs have been capitalized | vessel 1          
Number of container vessels accounted for as right of use assets | vessel 7          
Other long term previously included in receivables         $ 1,900,000  
Financing receivable, credit loss, expense     $ 1,900,000      
Financing receivable, after allowance for credit loss     $ 0      
Financing receivable, allowance for credit loss $ 0          
Cost            
Property, Plant and Equipment [Line Items]            
Capital improvements $ 500,000          
Construction in Progress            
Property, Plant and Equipment [Line Items]            
Number of vessels being upgraded | vessel 2     3    
Evergreen Marine | Container vessels            
Property, Plant and Equipment [Line Items]            
Number of container vessels accounted for as right of use assets | vessel           4
Charters value on aquisition           $ 18,000,000
Amortization $ 1,400,000 $ 1,400,000