Concentration of Risk (Details)	Jun. 30, 2012 Restaurants	Jun. 30, 2012 Property
Concentration of Risk (Textual) [Abstract]
Number of restaurants leased to Del Taco	3	3

The number of units (items of property) under operating lease arrangements.

No definition available.

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