2015 MERGER (Details) $ / shares in Units, $ in Thousands		6 Months Ended
	May. 07, 2015 USD ($) item $ / shares shares	Jun. 30, 2015 USD ($) item
Cash deposited with paying agent for the benefit of Navig8 shareholders		$ 4,527
Value of shares owned by shareholders prior to merger	$ 34,900
Shares owned by shareholders prior to merger (as a percent)	52.55%
Navig8
Number of employees | item	0
Number Of Time Charters | item		2
Length of time charter in months		6 months
Value of shares owned by shareholders prior to merger	$ 31,500
Shares owned by shareholders prior to merger (as a percent)	47.45%
Navig8
Number of shares to be issued as consideration per share of Navig8 | shares	0.8947
Share price used to calculate cash consideration | $ / shares	$ 14.348
Cash and cash equivalents	$ 28,874
Due from Navig8 pools, net	1,877
Prepaid expenses and other current assets	2,435
Vessels under construction	435,417
Other assets (noncurrent)	3,037
Accounts payable and accrued expenses	$ (5,859)
Shares deposited with merger exchange for the benefit of Navig8 shareholders | shares	31,233,170
Cash deposited with paying agent for the benefit of Navig8 shareholders	$ 4,527
Period following the anniversary of the closing of the merger, subject to indemnification obligation	24 months
Maximum payable for certain indemnification obligation	$ 75,000
Deductible applied under certain indemnification obligation	$ 5,000
Navig8 | VLCCs
Number of vessels under construction | item	14