Organization (Details Textual)	Jun. 30, 2012 Properties	Jun. 30, 2011 Properties
Organization (Textual) [Abstract]
Number of company owned commercial real estate properties	938	981

The number of real estate properties owned as of the balance sheet date.

No definition available.

Name:	us-gaap_NumberOfRealEstateProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant