Organization (Details)	Dec. 31, 2011 Property
Organization
Number of real estate properties	473
Hotels
Organization
Number of real estate properties	288
Travel centers
Organization
Number of real estate properties	185

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