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RELATED PARTY TRANSACTIONS (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Related Party Transaction [Line Items] |  |  |
Common Stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
Noncash share-based compensation expense recognized | $ 67,000 | $ 2,838,000 | $ 5,366,000
Restricted shares authorized (in shares) | 400,000 |  |
Costs and expenses, related party | 3,821,000 | 3,686,000 | 2,514,000
Accounts receivable, net related party | 1,600,000 |  |
Initial funding per vessel | 200,000 |  |
Number of months working capital is to be repaid (in months) | 6 |  |
Scandic American Shipping Ltd [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
New amount of management fee due to increase in the period | 500,000 |  |
Related Party Transaction, Previous amount of management fee before increase in the period | 350,000 |  |
Manager's right to ownership of company's total outstanding shares (in hundredths) | 2.00% |  |
Common Stock, par value (in dollars per share) | $ 0.01 |  |
Compensation - Restricted Shares (in shares) | 4,612 | 93,878 |
Fair value of shares issued to manager (in dollars per share) | $ 14.45 | $ 30.24 |
Noncash share-based compensation expense recognized | 100,000 | 2,800,000 | 5,400,000
Number of follow-on offerings | 9 |  |
Restricted shares issued in connection to follow-on offerings (in shares) | 937,976 |  |
Number of years after grant before restricted shares can be transferred (in years) | 3Y |  |
Shares non-transferable for longer period (in shares) | 149,183 |  |
Longer period for non-transferable restricted shares (in years) | 6Y |  |
Total costs for services recognized under the Management Agreement | 3,800,000 | 3,700,000 | 2,500,000
Accounts payable | 900,000 | 900,000 |
Restricted shares issued to the Manager (in shares) | 174,000 |  |
Share-based compensation arrangement shares authorized and issued, first range (in shares) | 100,000 |  |
Share-based compensation arrangement shares cliff vesting period, first range (in years) | 4Y |  |
Share-based compensation arrangement shares authorized and issued, second range (in shares) | 74,000 |  |
Share-based compensation arrangement shares cliff vesting period, second range (in years) | 5Y |  |
Ownership of company by Manager and Owners (in hundredths) | 2.20% |  |
Management Agreement remaining term (in years) | 10Y |  |
Continuous length of the Management Agreement unless terminated (in years) | 10Y |  |
Director [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Costs and expenses, related party | 100,000 | 100,000 | 100,000
Investor Relationship Officer [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Costs and expenses, related party | 100,000 | 100,000 | 100,000
Orion Tankers Ltd [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Costs and expenses, related party | 100,000 |  |
Accounts receivable, net related party | 1,600,000 |  |
Related party receivable | 18,900,000 |  |
Initial funding per vessel | $ 200,000 |  |
Number of months working capital is to be repaid (in months) | 6 |  |

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