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Segment Reporting (Tables) | 12 Months Ended
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Dec. 31, 2012
Segment Results Information | The following tables present results for these segments for the years ended December 31, 2012, 2011, and 2010.
Year ended December 31, 2012 |  | Shuttle Tanker and FSO Segment $ |  |  | FPSO Segment $ |  |  | Liquefied Gas Segment $ |  |  | Conventional Tanker Segment $ |  |  | Total $ |
Revenues |  |  | 613,388 |  |  |  | 581,215 |  |  |  | 286,237 |  |  |  | 475,395 |  |  |  | 1,956,235 |
Voyage expenses |  |  | 104,382 |  |  |  | 232 |  |  |  | 283 |  |  |  | 33,386 |  |  |  | 138,283 |
Vessel operating expenses |  |  | 175,459 |  |  |  | 331,124 |  |  |  | 45,972 |  |  |  | 177,564 |  |  |  | 730,119 |
Time-charter hire expense |  |  | 56,989 |  |  |  | — |  |  |  | — |  |  |  | 73,750 |  |  |  | 130,739 |
Depreciation and amortization |  |  | 125,104 |  |  |  | 135,413 |  |  |  | 69,064 |  |  |  | 126,317 |  |  |  | 455,898 |
General and administrative (2) |  |  | 54,139 |  |  |  | 68,035 |  |  |  | 21,969 |  |  |  | 58,824 |  |  |  | 202,967 |
Asset impairments |  |  | 28,830 |  |  |  | — |  |  |  | — |  |  |  | 405,252 |  |  |  | 434,082 |
Net loss on sale of vessels and equipment |  |  | 1,112 |  |  |  | — |  |  |  | — |  |  |  | 5,863 |  |  |  | 6,975 |
Restructuring charges |  |  | 652 |  |  |  | — |  |  |  | — |  |  |  | 6,913 |  |  |  | 7,565 |
Income (loss) from vessel operations |  |  | 66,721 |  |  |  | 46,411 |  |  |  | 148,949 |  |  |  | (412,474 | ) |  |  | (150,393 | )
Total assets of operating segments at December 31, 2012 |  |  | 1,709,674 |  |  |  | 2,824,832 |  |  |  | 3,148,037 |  |  |  | 2,037,394 |  |  |  | 9,719,938 |
Year ended December 31, 2011 |  | Shuttle Tanker and FSO Segment $ |  |  | FPSO Segment $ |  |  | Liquefied Gas Segment $ |  |  | Conventional Tanker Segment $ |  |  | Total $ |
Revenues |  |  | 613,768 |  |  |  | 464,810 |  |  |  | 272,041 |  |  |  | 603,163 |  |  |  | 1,953,782 |
Voyage expenses |  |  | 97,743 |  |  |  | — |  |  |  | 4,862 |  |  |  | 74,009 |  |  |  | 176,614 |
Vessel operating expenses |  |  | 196,536 |  |  |  | 242,332 |  |  |  | 48,158 |  |  |  | 190,661 |  |  |  | 677,687 |
Time-charter hire expense |  |  | 74,478 |  |  |  | — |  |  |  | — |  |  |  | 139,701 |  |  |  | 214,179 |
Depreciation and amortization |  |  | 129,293 |  |  |  | 96,915 |  |  |  | 63,641 |  |  |  | 138,759 |  |  |  | 428,608 |
General and administrative (2) |  |  | 60,359 |  |  |  | 52,854 |  |  |  | 20,586 |  |  |  | 89,817 |  |  |  | 223,616 |
Asset impairments |  |  | 43,185 |  |  |  | — |  |  |  | — |  |  |  | 112,103 |  |  |  | 155,288 |
Net loss (gain) on sale of vessels and equipment |  |  | 171 |  |  |  | (4,888 | ) |  |  | — |  |  |  | 488 |  |  |  | (4,229 | )
Bargain purchase gain |  |  | — |  |  |  | (68,535 | ) |  |  | — |  |  |  | — |  |  |  | (68,535 | )
Goodwill impairment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 36,652 |  |  |  | 36,652 |
Restructuring charges |  |  | 5,351 |  |  |  | — |  |  |  | — |  |  |  | 139 |  |  |  | 5,490 |
Income (loss) from vessel operations |  |  | 6,652 |  |  |  | 146,132 |  |  |  | 134,794 |  |  |  | (179,166 | ) |  |  | 108,412 |
Total assets of operating segments at December 31, 2011 |  |  | 1,891,496 |  |  |  | 2,527,095 |  |  |  | 2,924,653 |  |  |  | 2,572,685 |  |  |  | 9,915,929 |
Year ended December 31, 2010 |  | Shuttle Tanker and FSO Segment $ |  |  | FPSO Segment $ |  |  | Liquefied Gas Segment $ |  |  | Conventional Tanker Segment $ |  |  | Total $ |
Revenues (1) |  |  | 622,195 |  |  |  | 463,931 |  |  |  | 248,378 |  |  |  | 761,249 |  |  |  | 2,095,753 |
Voyage expenses |  |  | 111,003 |  |  |  | — |  |  |  | 29 |  |  |  | 134,065 |  |  |  | 245,097 |
Vessel operating expenses |  |  | 182,614 |  |  |  | 209,283 |  |  |  | 46,497 |  |  |  | 192,153 |  |  |  | 630,547 |
Time-charter hire expense |  |  | 89,768 |  |  |  | — |  |  |  | — |  |  |  | 196,224 |  |  |  | 285,992 |
Depreciation and amortization |  |  | 127,438 |  |  |  | 95,784 |  |  |  | 62,904 |  |  |  | 154,579 |  |  |  | 440,705 |
General and administrative (2) |  |  | 51,281 |  |  |  | 42,714 |  |  |  | 20,147 |  |  |  | 79,601 |  |  |  | 193,743 |
Asset impairments |  |  | 19,480 |  |  |  | — |  |  |  | — |  |  |  | 31,730 |  |  |  | 51,210 |
Net (gain) loss on sale of vessels and equipment |  |  | — |  |  |  | — |  |  |  | (4,340 | ) |  |  | 2,280 |  |  |  | (2,060 | )
Restructuring charges |  |  | 704 |  |  |  | — |  |  |  | 394 |  |  |  | 15,298 |  |  |  | 16,396 |
Income (loss) from vessel operations |  |  | 39,907 |  |  |  | 116,150 |  |  |  | 122,747 |  |  |  | (44,681 | ) |  |  | 234,123 |
(1) | FPSO segment includes $59.2 million in revenue for the year ended December 31, 2010, related to operations in previous years as a result of executing a contract amendment in March 2010.
(2) | Includes direct general and administrative expenses and indirect general and administrative expenses (allocated to each segment based on estimated use of corporate resources).
Reconciliation of Total Segment Assets | A reconciliation of total segment assets to amounts presented in the accompanying consolidated balance sheets is as follows:
|  | December 31, 2012 $ |  |  | December 31, 2011 $ |
Total assets of all segments |  |  | 9,719,938 |  |  |  | 9,915,929 |
Cash |  |  | 639,491 |  |  |  | 692,127 |
Accounts receivable and other assets |  |  | 642,596 |  |  |  | 529,621 |
Consolidated total assets |  |  | 11,002,025 |  |  |  | 11,137,677 |
Revenues and Percentage of Consolidated Revenues | The following table presents revenues and percentage of consolidated revenues for customers that accounted for more than 10% of the Company’s consolidated revenues during the periods presented. All of these customers are international oil companies.
(U.S. dollars in millions) |  | Year Ended December 31, 2012 |  |  | Year Ended December 31, 2011 |  |  | Year Ended December 31, 2010 |
Statoil ASA (1) |  |  | $299.1 or 15% |  |  | $ | 283.7 or 15 | % |  | $ | 330.4 or 16 | %
Petroleo Brasileiro SA (1) |  |  | $289.3 or 15% |  |  | $ | 224.9 or 12 | % |  | $ | 226.0 or 11 | %
BP PLC (2) |  |  | (3 | ) |  |  |  | (3) |  | $ | 222.2 or 11 | %
(1) | Shuttle tanker and FSO, FPSO and conventional tanker segments
(2) | Shuttle tanker and FSO, FPSO, liquefied gas and conventional tanker segments
(3) | Less than 10%

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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 39 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27, 28 -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 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8721-108599 + Details
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