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SHARE-BASED COMPENSATION PLAN (Details) (USD $) In Millions, except Share data, unless otherwise specified | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2011 Equity Incentive Plan 2011 [Member] | Dec. 31, 2010 Equity Incentive Plan 2011 [Member] | Dec. 31, 2011 Restricted Stock Awards [Member] Scandic American Shipping Ltd. [Member] | Dec. 31, 2010 Restricted Stock Awards [Member] Scandic American Shipping Ltd. [Member] | Dec. 31, 2011 Restricted Stock Awards [Member] Employees [Member] Equity Incentive Plan 2011 [Member] | Dec. 31, 2010 Restricted Stock Awards [Member] Employees [Member] Stock Incentive Plan 2004 [Member] | Dec. 31, 2011 Restricted Stock Awards [Member] Non-Employees [Member] Equity Incentive Plan 2011 [Member] | Dec. 31, 2010 Restricted Stock Awards [Member] Non-Employees [Member] Stock Incentive Plan 2004 [Member] | Dec. 31, 2010 Restricted Stock Awards [Member] Employees and Non-Employees [Member] Stock Incentive Plan 2004 [Member] | Dec. 31, 2006 Restricted Stock Awards [Member] Employees and Non-Employees [Member] Stock Incentive Plan 2004 [Member] | Dec. 31, 2009 Restricted Stock Awards [Member] Employees and Non-Employees [Member] Stock Incentive Plan 2004 [Member] | Dec. 31, 2011 Restricted Stock Awards [Member] Employees and Directors and Non-Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
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 | $ 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 |  |  |  |  |  |  |  |
Individuals in management and Board members participating in incentive plan | 23 |  |  |  |  |  |  |  |  |  |  |  |  |
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 compensation cost for the period |  |  | $ 1.30 |  |  |  |  |  |  |  | $ 0.06 |  |  |
Restricted shares authorized (in shares) | 400,000 |  |  | 400,000 |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement shares cliff vesting period, first range (in years) |  |  | 4Y |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement shares authorized and issued, first range (in shares) |  |  | 326,000 |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement shares cliff vesting period, second range (in years) |  |  | 5Y |  |  |  |  |  |  |  |  |  |  |
Share-based compensation arrangement shares authorized and issued, second range (in shares) |  |  | 74,000 |  |  |  |  |  |  |  |  |  |  |
Intrinsic value of restricted shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.7
Unrecognized compensation cost related to unvested restricted stock |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.1 | $ 6.7
Weighted average period to recognize the unrecognized compensation cost (in years) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3.42
Restricted shares -Employees and Non-Employees [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested at beginning of period (in shares) |  |  |  |  |  |  | 0 | 2,425 | 0 | 1,750 |  |  |  |
Granted during the year (in shares) |  |  |  |  | 578,306 | 399,694 | 163,000 | 0 | 237,000 | 0 |  | 16,700 |  | 226,000
Vested during the year (in shares) |  |  |  |  |  |  | 0 | 2,425 | 0 | 1,750 |  |  |  |
Forfeited during the year (in shares) |  |  |  |  |  |  | 0 | 0 | 0 | 0 |  |  |  |
Non-vested at end of period (in shares) |  |  |  |  |  |  | 163,000 | 0 | 237,000 | 0 |  |  |  |
Weighted-average grant-date fair value [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-vested at beginning of period (in dollars per share) |  |  |  |  |  |  | $ 0 | $ 31.99 | $ 0 | $ 31.99 |  |  |  |
Granted during the year (in dollars per share) |  |  |  |  |  |  | $ 23.88 | $ 0 | $ 22.06 | $ 0 |  |  |  |
Vested during the year (in dollars per share) |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |
Forfeited during the year (in dollars per share) |  |  |  |  |  |  | $ 0 | $ 0 | $ 0 | $ 0 |  |  |  |
Non-vested at end of period (in dollars per share) |  |  |  |  |  |  | $ 23.88 | $ 0 | $ 22.06 | $ 0 |  |  |  |
Restricted shares vested and outstanding to employees and non-employees (in shares) |  |  |  |  |  |  |  |  |  |  | 16,700 |  |  |

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- Definition Equity-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -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 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(e) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(e) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -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 FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(a) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(b) -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 FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(d) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(d) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards. + 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 FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 4, 5 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration