Related Party Transactions and Balances - Revenues (Expenses) from Related Party Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transactions [Abstract]
Revenues	$ 117,764	$ 49,509	$ 49,228
Vessel operating expenses	(6,298)	(32,346)	(34,629)
General and administrative	(18,162)	(31,340)	(29,944)
Interest expense	(38,695)	(25,882)	(22,400)
Losses on debt repurchases	$ (46,041)	$ 0	$ 0

Gain (Loss) on Repurchase of Debt Instrument, Including Interest Expense, and Accretion Expense

No definition available.

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- Definition

Costs of sales and operating expenses for the period incurred from transactions with related parties.

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+ Details

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- Definition

Amount of interest expense incurred on a debt or other obligation to related party.

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No definition available.

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- Definition

Amount of selling, general and administrative expenses resulting from transactions, excluding transactions that are eliminated in consolidated or combined financial statements, with related party.

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No definition available.

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- References

No definition available.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07.1(c))
-URI http://asc.fasb.org/extlink&oid=6488393&loc=d3e606610-122999

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