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FINANCIAL ITEMS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Financial income      
Interest income from cash and cash equivalents, including restricted cash $ 2,500 $ 2,700 $ 1,600
Exchange rate adjustments, including gain from forward exchange rate contracts 300 600 2,700
Total 2,796 3,302 4,255
Financial expenses      
Interest expenses on mortgage and bank debt 39,300 35,700 33,300
Exchange rate adjustments, including loss from forward exchange rate contracts 200 100 3,200
Commitment fee 1,900 2,600 2,400
Other financial expenses 500 900 1,700
Total 41,881 39,345 40,601
Total financial items $ (39,100) $ (36,000) $ (36,300)