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Summary Of Significant Accounting Policies (Summary Of Gross Components Of Property And Equipment) (Details) (USD $) In Thousands, unless otherwise specified |  |  |  |  |  |  | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2013 ROVs/Vessels [Member] | Dec. 31, 2012 ROVs/Vessels [Member] | Dec. 31, 2013 Machinery, Equipment, Buildings And Leasehold Improvements [Member] | Dec. 31, 2012 Machinery, Equipment, Buildings And Leasehold Improvements [Member] | Dec. 31, 2013 Maximum [Member] ROVs/Vessels [Member] | Dec. 31, 2013 Maximum [Member] Machinery, Equipment, Buildings And Leasehold Improvements [Member] | Dec. 31, 2013 Minimum [Member] ROVs/Vessels [Member] | Dec. 31, 2013 Minimum [Member] Machinery, Equipment, Buildings And Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |  |  |
Property and equipment | $ 1,959,783 | $ 2,051,796 | $ 1,671,451 | $ 1,822,642 | $ 288,332 | $ 229,154 |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  | 30 years | 30 years | 10 years | 5 years

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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + 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 (b) -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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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