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Acquisition (Selected Financial Information) (Details) (Hornbeck Acquisition [Member], USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2014
Hornbeck Acquisition [Member] |  |
SelectedFinancialInformation [Line Items] |  |
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual | $ 2,520 | $ 2,520
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual | $ 8,651 | $ 8,651

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