Represents the amount of progress payments made for construction of ships under the agreement.

No definition available.

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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.

+ References

No definition available.

+ Details

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- Definition

The minimum number of units that must be purchased, in connection with an unconditional purchase obligation that has not been recognized for financial reporting purposes.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount purchased during the period under an unrecorded unconditional purchase obligation (for example, under the take-or-pay or throughput contract).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

+ Details

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- Details

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- Details

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PROPERTY AND EQUIPMENT - NEW CONSTRUCTION (Details) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2013 USD ($) item	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Property and equipment
Number of 3,600 twenty-foot equivalent units Aloha-class container ships to be constructed \| item	2
APSI \| Aloha-class dual-fuel capable container vessels
Property and equipment
Number of 3,600 twenty-foot equivalent units Aloha-class container ships to be constructed \| item	2
Cost for construction of containerships \| $	$ 418.0
Progress payments made under the agreement \| $		$ 29.3	$ 8.4