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SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 vessel item | Dec. 31, 2012 | Dec. 31, 2011
Impairment of Investment |  |  |
Impairment charges related to investment in Terminal joint venture | $ 0 | $ 0 | $ 0
Impairment of Vessels and Equipment |  |  |
Impairment charges of vessels and equipment | 0 | 0 | 0
Dry-docking |  |  |
Number of dry-docking inspections to be made within a specified period | 2 |  |
Period within which number of specified dry-docking inspections to be made | 5 years |  |
Number of non-U.S. flag vessels in operations | 4 |  |
Number of non-U.S. flag vessels owned | 1 |  |
Number of non-U.S. flag vessels under bareboat charter | 1 |  |
Number of non-U.S. flag vessels under time charter | 2 |  |
Dry-dock interval, minimum | 2 years |  |
Dry-dock interval, maximum | 5 years |  |
Deferred dry-docking costs | $ 56.9 | $ 66.3 |
Vessels | Minimum |  |  |
Depreciation |  |  |
Useful life | 5 years |  |
Vessels | Maximum |  |  |
Depreciation |  |  |
Useful life | 40 years |  |
Machinery and equipment | Minimum |  |  |
Depreciation |  |  |
Useful life | 2 years |  |
Machinery and equipment | Maximum |  |  |
Depreciation |  |  |
Useful life | 20 years |  |
Terminal Facilities | Minimum |  |  |
Depreciation |  |  |
Useful life | 2 years |  |
Terminal Facilities | Maximum |  |  |
Depreciation |  |  |
Useful life | 35 years |  |

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- Definition Sum of the carrying amounts of deferred costs that are expected to be recognized as a charge against earnings in periods after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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