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Financial Instruments - Fair Value Measurements on a Nonrecurring basis (Table) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Long-lived assets classified as held for sale - Loss	$ 28,805	$ 3,282	$ 0
Nonrecurring basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Long-lived assets classified as held for sale - Loss		3,282
Level II | Nonrecurring basis
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Long-lived assets classified as held for sale (Note 5)		$ 29,400

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Fair value portion of assets classified as held for sale.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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