SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended					2 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Revolving Credit Facility [Member]	Dec. 31, 2012 Unsecured Forward Start Credit Facility [Member]	Dec. 31, 2012 Unsecured Debt [Member]	Dec. 31, 2012 Vessals [Member]	Dec. 31, 2012 International Flag Tankers [Member]	Dec. 31, 2012 Property, Plant and Equipment, Other Types [Member] Minimum [Member]	Dec. 31, 2012 Property, Plant and Equipment, Other Types [Member] Maximum [Member]
Property, Plant and Equipment, Useful Life							25 years	20 years	3 years	35 years
Property, Plant, and Equipment, Salvage Value (Per Tonne)							$ 300
Interest Costs Capitalized	1,060	6,767	10,334
Intangible Assets, accumulated amortization	31,356	26,173
Amortization of Intangible Assets	5,183	5,183	6,340
Amortization Of Financing Costs and Discounts	3,198	3,576	4,081			445
Finite-Lived Intangible Asset, Useful Life	5 years
Impairment of Intangible Assets, Finite-lived	5,183
Deferred Finance Costs, Noncurrent, Net	0	25,777				10,517
Long-term Debt	0	2,065,892		1,500,000	900,000
Amortization Of Deferred Financing Costs	15,260	3,023	3,663
Deferred financing costs write-off	$ 12,540	$ 0	$ 0
Income Tax Benefit Rate	50.00%