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SHAREHOLDERS' EQUITY (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2007
Authorized Shares [Roll forward] |  |  |  |
Balance at beginning of period (in shares) | 90,000,000 |  |  |
Balance at end of period (in shares) | 90,000,000 | 90,000,000 |  |
Issued and Outstanding Shares [Roll forward] |  |  |  |
Balance at beginning of period, issued (in shares) | 47,303,394 |  |  |
Balance at beginning of period, outstanding (in shares) | 47,303,394 |  |  |
Balance at end of period, issued (in shares) | 52,915,639 | 47,303,394 |  |
Balance at end of period, outstanding (in shares) | 52,915,639 | 47,303,394 |  |
Common Stock [Roll forward] |  |  |  |
Common Shares Issued in Follow-on Offering | $ 75,582,000 |  | $ 136,510,000 |
Compensation - Restricted Shares | 1,541,000 | 67,000 | 2,838,000 |
Common Stock [Abstract] |  |  |  |
Net proceeds from underwritten public offering of common shares | 75,582,000 | 4,000 | 136,510,000 |
Common Stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |  |
Number of employees who had resigned | 2 |  |  |
Additional Paid in Capital [Abstract] |  |  |  |
Share Premium Fund | 0 | 0 |  |
Reduction of Share Premium | 75,600,000 |  | 136,400,000 |
Contributed Surplus Account [Abstract] |  |  |  |
Net Income (Loss) | 73,192,000 | 72,298,000 | 809,000 |
Shareholders' Rights Plan [Abstract] |  |  |  |
Preferred stock purchase right |  |  |  | one preferred stock purchase right to purchase one one-thousandth of a share of our Series A Participating Preferred Stock for each outstanding share of our common stock, par value $0.01 per share
Stockholders rights, exercise price |  |  |  | $ 115
Percentage of common stock ownership (in hundredths) |  |  |  | 15.00%
Restricted Stock Awards [Member] | Scandic American Shipping Ltd. [Member] |  |  |  |
Issued and Outstanding Shares [Roll forward] |  |  |  |
Compensation - Restricted Shares (in shares) | 112,245 | 4,612 |  |
Common Stock [Abstract] |  |  |  |
Restricted shares issued and outstanding (in shares) | 690,551 | 578,306 |  |
Restricted Stock Awards [Member] | Employees and Non-Employees [Member] | Stock Incentive Plan 2011 [Member] |  |  |  |
Common Stock [Abstract] |  |  |  |
Shares held in treasury (in shares) | 8,500 |  |  |
Restricted shares issued and outstanding (in shares) | 217,500 | 226,000 |  |
Common Stock [Member] |  |  |  |
Authorized Shares [Roll forward] |  |  |  |
Balance at beginning of period (in shares) | 90,000,000 | 51,200,000 | 51,200,000 |
Increased authorized share capital (in shares) |  | 38,800,000 |  |
Balance at end of period (in shares) | 90,000,000 | 90,000,000 | 51,200,000 |
Issued and Outstanding Shares [Roll forward] |  |  |  |
Balance at beginning of period, issued (in shares) | 47,303,394 | 46,898,782 | 42,204,904 |
Balance at beginning of period, outstanding (in shares) | 47,303,394 | 46,898,782 | 42,204,904 |
Common Shares Issued in Follow-on Offering (in shares) | 5,500,000 |  | 4,600,000 |
Compensation - Restricted Shares (in shares) | 112,245 | 4,612 | 93,878 |
Common Shares Issued, 2011 Equity Incentive Plan (in shares) |  | 400,000 |  |
Balance at end of period, issued (in shares) | 52,915,639 | 47,303,394 | 46,898,782 |
Balance at end of period, outstanding (in shares) | 52,915,639 | 47,303,394 | 46,898,782 |
Common Stock [Roll forward] |  |  |  |
Balance at beginning of period | 473,000 | 469,000 | 422,000 |
Common Shares Issued in Follow-on Offering | 55,000 |  | 46,000 |
Compensation - Restricted Shares | 1,000 | 0 | 1,000 |
Common Shares Issued, 2011 Equity Incentive Plan |  | 4,000 |  |
Balance at end of period | 529,000 | 473,000 | 469,000 |
Common Stock [Abstract] |  |  |  |
Shares held in treasury (in shares) | 8,500 |  |  |
Contributed Surplus Account [Abstract] |  |  |  |
Net Income (Loss) | $ 0 | $ 0 | $ 0 |

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- Definition Number of shares that have been repurchased during the period and are being held in treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
Name: | us-gaap_TreasuryStockSharesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration