Basis of Presentation (Details)	Mar. 31, 2012
Accounting Policies [Abstract]
Percentage of interest in joint venture by the company	55.00%
Noncontrolling interest in joint venture	45.00%

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant