RELATED PARTY TRANSACTIONS - General (Details)	12 Months Ended
	Dec. 31, 2017 USD ($)
VL8 Pool Inc. | VL8 Pool
Related party transactions
Commercial Management Fee (as a percent)	1.25%
V8 Pool Inc. | Suez8 Pool
Related party transactions
Commercial Management Fee (as a percent)	1.25%
V8 Pool Inc. | V8 Pool
Related party transactions
Commercial Management Fee (as a percent)	2.00%
VLCC vessels | VL8 Pool Inc. | VL8 Pool
Related party transactions
Daily pool administration fee	$ 325.00
Aframax | V8 Pool Inc. | V8 Pool
Related party transactions
Daily pool administration fee	250.00
Suezmax Vessels | V8 Pool Inc. | Suez8 Pool
Related party transactions
Daily pool administration fee	$ 325.00
Navig8 Limited
Related party transactions
Ownership percentage in outstanding common shares (as a percent)	4.00%