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CONTRACTUAL OBLIGATIONS (Detail Textuals)
$ in Millions
12 Months Ended
Dec. 31, 2018
USD ($)
Newbuilding
Dec. 31, 2017
USD ($)
Newbuilding
Disclosure Of Contractual Commitments [Abstract]    
Direct issuance costs for borrowings $ 5.1 $ 4.8
Borrowing costs capitalized $ 1.1 $ 3.5
Expected number of newbuildings to be delivered during 2019-2020 | Newbuilding 9 10
Other operating lease expense $ 2.5 $ 2.3
Average period until redelivery of the vessels 9 months 18 days 1 year 1 month 6 days