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SEGMENT DATA (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 Segment | Mar. 31, 2013 | Dec. 31, 2013
SEGMENT DATA [Abstract] |  |  |
Number of Reportable Segments | 2 |  |
Revenues [Abstract] |  |  |
Marine transportation | $ 435,771 | $ 418,518 |
Diesel engine services | 153,475 | 140,267 |
Total revenues | 589,246 | 558,785 |
Segment profit (loss) | 101,000 | 91,936 |
Total assets | 3,805,704 |  | 3,682,517
Other segment disclosures [Abstract] |  |  |
Gain (loss) on disposition of assets | 51 | (32) |
Interest expense | (5,618) | (7,988) |
Other income (expense) | (236) | 75 |
Details of "Other" total assets [Abstract] |  |  |
Total assets | 3,805,704 |  | 3,682,517
Marine transportation [Member] |  |  |
Revenues [Abstract] |  |  |
Segment profit (loss) | 97,551 | 89,253 |
Total assets | 3,165,657 |  | 3,046,692
Details of "Other" total assets [Abstract] |  |  |
Total assets | 3,165,657 |  | 3,046,692
Diesel engine services [Member] |  |  |
Revenues [Abstract] |  |  |
Segment profit (loss) | 12,772 | 14,022 |
Total assets | 572,709 |  | 576,472
Details of "Other" total assets [Abstract] |  |  |
Total assets | 572,709 |  | 576,472
Other [Member] |  |  |
Revenues [Abstract] |  |  |
Segment profit (loss) | (9,323) | (11,339) |
Total assets | 67,338 |  | 59,353
Other segment disclosures [Abstract] |  |  |
General corporate expenses | (3,520) | (3,394) |
Gain (loss) on disposition of assets | 51 | (32) |
Interest expense | (5,618) | (7,988) |
Other income (expense) | (236) | 75 |
Profit (loss) from other segment | (9,323) | (11,339) |
Details of "Other" total assets [Abstract] |  |  |
General corporate assets | 65,095 |  | 57,197
Investment in affiliates | 2,243 |  | 2,156
Total assets | $ 67,338 |  | $ 59,353

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- Definition Overhaul and repair of medium-speed and high-speed diesel engines, reduction gear repair, and sale of related parts and accessories for customers in the marine, power generation and railroad industries. + References No definition available. + Details
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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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- Definition Revenue from transporting cargo and freight between locations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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