Basis of Presentation and Significant Accounting Policies (Details)	9 Months Ended
Sep. 30, 2014 item	Mar. 31, 2014 Non-controlling interests Joint venture
Segment Disclosure
Number of reportable segments	1
Non-controlling interests
Third-party ownership (as a percent)		19.00%

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration