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Segment Reporting - Segment Results Information (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Segment Reporting Information [Line Items] |  |  |  |
REVENUES | $ 452,254 | $ 430,707 | $ 958,748 | $ 881,744
Voyage expenses | 33,439 | 26,154 | 68,451 | 52,469
Vessel operating expenses | 201,714 | 195,978 | 402,900 | 383,442
Time-charter hire expense | 9,714 | 26,544 | 26,006 | 53,996
Depreciation and amortization | 103,373 | 109,769 | 206,831 | 212,263
General and administrative | 36,945 | 35,395 | 74,823 | 74,666
Loan loss provisions (recoveries) | (2,521) | 7,042 | (2,521) | 10,207
(Gain) loss on sale of vessels and equipment | (9,615) | (1,341) | (9,453) | (1,309)
Restructuring charges | (244) | 1,789 | 395 | 3,843
Income from vessel operations | 79,449 | 29,377 | 191,316 | 92,167
Shuttle Tanker and FSO Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
REVENUES | 142,816 | 140,062 | 304,028 | 278,715
Voyage expenses | 24,890 | 22,275 | 56,619 | 44,084
Vessel operating expenses | 46,989 | 43,472 | 93,007 | 88,379
Time-charter hire expense | 4,975 | 14,110 | 16,387 | 28,887
Depreciation and amortization | 27,039 | 29,093 | 54,376 | 56,789
General and administrative | 8,005 | 9,324 | 17,382 | 19,828
Restructuring charges | (820) | 1,043 | (268) | 1,630
Income from vessel operations | 31,738 | 20,745 | 66,525 | 39,118
FPSO Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
REVENUES | 131,155 | 122,560 | 273,674 | 263,489
Voyage expenses | 172 |  | 172 |
Vessel operating expenses | 92,436 | 84,054 | 185,940 | 161,438
Depreciation and amortization | 38,056 | 39,285 | 75,868 | 73,317
General and administrative | 15,524 | 11,760 | 30,865 | 24,121
Loan loss provisions (recoveries) | (2,521) |  | (2,521) |
(Gain) loss on sale of vessels and equipment |  | (1,338) |  | (1,338)
Income from vessel operations | (12,512) | (11,201) | (16,650) | 5,951
Liquefied Gas Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
REVENUES | 81,970 | 70,983 | 163,393 | 141,984
Voyage expenses | 739 | 487 | 1,572 | 491
Vessel operating expenses | 17,139 | 15,164 | 33,650 | 30,260
Depreciation and amortization | 17,888 | 18,328 | 36,001 | 35,619
General and administrative | 6,294 | 5,314 | 13,494 | 11,510
Income from vessel operations | 39,910 | 31,690 | 78,676 | 64,104
Conventional Tanker [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
REVENUES | 96,313 | 97,102 | 217,653 | 197,556
Voyage expenses | 7,638 | 3,392 | 10,088 | 7,894
Vessel operating expenses | 45,150 | 53,288 | 90,303 | 103,365
Time-charter hire expense | 4,739 | 12,434 | 9,619 | 25,109
Depreciation and amortization | 20,390 | 23,063 | 40,586 | 46,538
General and administrative | 7,122 | 8,997 | 13,082 | 19,207
Loan loss provisions (recoveries) |  | 7,042 |  | 10,207
(Gain) loss on sale of vessels and equipment | (9,615) | (3) | (9,453) | 29
Restructuring charges | 576 | 746 | 663 | 2,213
Income from vessel operations | $ 20,313 | $ (11,857) | $ 62,765 | $ (17,006)

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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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