ACCOUNTS PAYABLE AND ACCRUED LIABILITIES (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accounts Payable and Accrued Liabilities [Abstract]
Accrued Voyage Expenses	$ 38,310	$ 22,746
Trade Accounts Payable	3,284	1,541
Lease Incentive Obligation	1,901	3,253
Short Term Derivatives Liability	257	0
Straight Line Charter Escalation	306	0
Self-Insurance Liability	1,186	639
Accrued Salaries and Benefits	5,050	2,929
Accrued Insurance Premiums	602	376
Accounts Payable and Accrued Liabilities	$ 50,896	$ 31,484