Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014
Other Commitments [Line Items]
Purchase price obligation	$ 161,989us-gaap_ContractualObligation
MSC Cristina
Other Commitments [Line Items]
Vessel year built	2011
Vessel type	Container
Purchase price obligation	$ 147,750

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

No definition available.

Name:	us-gaap_ContractualObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant