Gain on Sale of Businesses	6 Months Ended
Gain on Sale of Businesses	Jun. 30, 2011
Gain on Sale of Businesses [Abstract]
Gain on Sale of Businesses	(13) Gain on Sale of Businesses During the six month period ended June 30, 2011, the Company sold seven liftboats for approximately $22.3 million, net of commissions. Five of the liftboats sold were from our 145 to 155-foot class fleet, one was from our 160-foot class fleet and one was from our 200-foot class fleet. As a result of the sale of these liftboats, the Company recorded a pre-tax gain of approximately $8.6 million for the six month period ended June 30, 2011.

The entire disclosure for the facts and circumstances leading to the completed or expected disposal, manner and timing of disposal, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the segment in which the disposal group was reported, and the classification (whether sold or classified as held for sale) and carrying value of the assets and liabilities comprising the disposal group. Includes all disposal groups, including those classified as components of the entity (discontinued operations).

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-Name Accounting Standards Codification
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-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 43-48
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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