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Acquisitions (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Business Acquisition [Line Items] |  |  |
Schedule of Purchase Price Allocation | The allocation of the purchase price is summarized as follows:
Property and equipment | $ | 28,456 |
Equity investees | 182,993 |
Asset retirement obligation assumed | (5,873 | )
Total allocation | $ | 205,576 |
Selected Financial Information |  | The following table presents selected financial information included in our Consolidated Financial Statements for the year ended December 31, 2012:
| Year Ended December 31,
| 2012
Revenues | $ | 5,508 |
Equity in earnings of equity investees | $ | 13,118 |
Net income | $ | 15,112 |
Schedule of Pro Forma Financial Information |  |  | The unaudited pro forma financial information below has been prepared as if the acquisition had been completed at the beginning of the prior year and is based upon assumptions deemed appropriate by us and may not be indicative of actual results.
| Year Ended December 31,
| 2011
Pro forma earnings data: |
Revenues from continuing operations | $ | 2,444,821 |
Equity in earnings of equity investees | $ | 14,770 |
Net income | $ | 58,349 |
Basic and diluted earnings per unit: |
As reported net income per unit | $ | 0.75 |
Pro forma net income per unit | $ | 0.86 |
As reported units outstanding | 67,938 |
Pro forma units outstanding | 67,938 |
Hornbeck Acquisition [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Selected Financial Information | The following table presents selected financial information included in our Consolidated Financial Statements for the year ended December 31, 2013:
| Year Ended December 31,
| 2013
Revenues | $ | 30,424 |
Net income | $ | 7,348 |
Schedule of Pro Forma Financial Information | The table below presents selected unaudited pro forma financial information for us incorporating the historical results of our offshore marine transportation business. The pro forma financial information below has been prepared as if the acquisition had been completed on January 1, 2012 and is based upon assumptions deemed appropriate by us and may not be indicative of actual results. Depreciation expense for the fixed assets acquired is calculated on a straight-line basis over an estimated useful life of approximately 25 years.
| Year Ended December 31,
| 2013 |  | 2012
Pro forma earnings data: |  |  |
Revenues from continuing operations | $ | 4,177,715 |  |  | $ | 3,416,790 |
Net Income | $ | 98,846 |  |  | $ | 98,665 |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1486-128463 + Details
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