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GOODWILL (Details 1) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Statement1 [Line Items]        
Goodwill $ 0 $ 960    
Gross carrying amount [member]        
Statement1 [Line Items]        
Goodwill 3,305 3,928 $ 3,928 $ 3,912
Gross carrying amount [member] | Parcel Service [Member]        
Statement1 [Line Items]        
Goodwill 216 235    
Island Trading and Shipping [Member] | Gross carrying amount [member]        
Statement1 [Line Items]        
Goodwill 3,089 3,089    
Unicorn Tankers International [Member] | Gross carrying amount [member]        
Statement1 [Line Items]        
Goodwill $ 0 $ 604