Lessee Leasing Arrangements, Operating Leases, Number Of Renewal Options

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- Definition

Minimum contracted vessel days.

+ References

No definition available.

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- Definition

Number Of Chartered Vessels

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No definition available.

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- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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- Definition

Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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No definition available.

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- Definition

The cash inflow from sale of buildings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

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- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Company Overview (Details) $ in Thousands	1 Months Ended			6 Months Ended		12 Months Ended
Company Overview (Details) $ in Thousands	Feb. 29, 2016 USD ($)	Jan. 31, 2016 USD ($) renewal_option	Feb. 28, 2014 vessel	Jun. 30, 2016 USD ($) segment vessel	Jun. 30, 2015 USD ($)	Dec. 31, 2017
Segment Reporting Information [Line Items]
Number of reportable segments \| segment				3
Sale of ownership interest for cash				$ 25,000	$ 0
Scotland
Segment Reporting Information [Line Items]
Proceeds from sale of property		$ 11,000
Term of agreement		15 years
Number of renewal options \| renewal_option		2
Term of renewal option		5 years
Gain from sale of property		$ 7,600
Deepwater Gateway, L.L.C. [Member]
Segment Reporting Information [Line Items]
Sale of ownership interest for cash	$ 25,000
Robotics [Member]
Segment Reporting Information [Line Items]
Number of chartered vessels \| vessel				3
Q5000 [Member] \| Forecast [Member]
Segment Reporting Information [Line Items]
Minimum contracted vessel days						270 days
Monohull Vessels [Member]
Segment Reporting Information [Line Items]
Number of chartered vessels \| vessel			2
Monohull Vessels [Member] \| Well Intervention [Member]
Segment Reporting Information [Line Items]
Number of chartered vessels \| vessel				2