Amount classified as property, plant and equipment attributable to disposal group held for sale or disposed of, expected to be disposed of after one year or the normal operating cycle, if longer.

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

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Other Expense (Details) - USD ($) $ in Thousands		12 Months Ended
Other Expense (Details) - USD ($) $ in Thousands	Jan. 12, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property Plant And Equipment [Line Items]
Vessel held for sale		$ 0	$ 125,000
Proceeds from sale of vessel		113,818	0	$ 0
Gain / (Loss) on sale of vessel		(1,260)	0	0
Allowance for doubtful accounts		1,495	0	$ 0
Hanjin Shipping Co. Ltd
Property Plant And Equipment [Line Items]
Allowance for doubtful accounts		1,495
MSC Cristina
Property Plant And Equipment [Line Items]
Vessel held for sale			$ 125,000
Proceeds from sale of vessel	$ 123,740
Gain / (Loss) on sale of vessel		$ 1,260