Commitments And Contingencies [Line Items]

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- Definition

Lessee Leasing Arrangements, Operating Leases, Number Of Renewal Options

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- Definition

The percentage due of the amount the entity agreed to spend under the long-term purchase commitment.

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- Definition

Number Of Chartered Vessels

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- Definition

Operating Leases, Annual Payments Due

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- Definition

Term of charter agreement in years.

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- Definition

The duration period applicable to the contract.

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No definition available.

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Section 50
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- Definition

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

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- Definition

Contractually required future rental payments receivable on noncancelable subleasing arrangements.

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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- Definition

The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases.

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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Commitments And Contingencies And Other Matters - Narrative (Details) $ in Thousands	1 Months Ended		12 Months Ended
	Jan. 31, 2016 USD ($) renewal_option	Feb. 28, 2014 vessel	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Commitments And Contingencies [Line Items]
Total investment			$ 2,695,772	$ 2,450,890
Total rental expense			114,500	87,800	$ 134,300
Total rental income			1,300	$ 1,600	$ 1,400
Minimum rentals to be received in the future			1,400
Scotland [Member]
Commitments And Contingencies [Line Items]
Term of lease agreement	15 years
Number of renewal options \| renewal_option	2
Term of renewal option	5 years
Annual minimum lease payment	$ 800
Q7000 [Member]
Commitments And Contingencies [Line Items]
Total investment			$ 295,800
Q7000 [Member] \| Contract Signing [Member]
Commitments And Contingencies [Line Items]
Percentage of contract price			20.00%
Q7000 [Member] \| Due 2016 [Member]
Commitments And Contingencies [Line Items]
Percentage of contract price			20.00%
Q7000 [Member] \| Due December 2017 [Member]
Commitments And Contingencies [Line Items]
Percentage of contract price			20.00%
Q7000 [Member] \| Due December 31, 2018 [Member]
Commitments And Contingencies [Line Items]
Percentage of contract price			20.00%
Q7000 [Member] \| Vessel Delivery [Member]
Commitments And Contingencies [Line Items]
Percentage of contract price			20.00%
Monohull Vessels [Member]
Commitments And Contingencies [Line Items]
Number of chartered vessels \| vessel		2
Topside Equipment [Member]
Commitments And Contingencies [Line Items]
Total investment			$ 309,800
Shipyard In Singapore [Member] \| Q7000 [Member]
Commitments And Contingencies [Line Items]
Total investment			$ 207,600
Siem [Member] \| Monohull Vessels [Member]
Commitments And Contingencies [Line Items]
Term of charter agreement		7 years
Petrobras [Member]
Commitments And Contingencies [Line Items]
Term of contract		4 years