Represents the amount of annual percentage rent to be waived starting in 2013.

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- Definition

Represents the amount of the deferred rent receivable at the balance sheet date due in December 2022.

+ Details

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- Definition

Represents the amount of the deferred rent receivable at the balance sheet date due in June 2024.

+ Details

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- Definition

Number of lease agreements modified by an amendment.

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Balance Type:	na
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- Definition

Represents the number of management agreements or leases under which properties of the entity are operated.

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Balance Type:	na
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- Definition

Represents the number of renewal options available.

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the additional annual rent the lessee is obligated to pay on an operating lease.

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Balance Type:	credit
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- Definition

Represents the annual rent the lessee is obligated to pay on an operating lease.

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- Definition

Represents the annual rent the lessee was obligated to pay on an operating lease prior to modification of the lease terms.

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- Definition

Represents the percentage of fuel revenue to be paid by the lessee.

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage of non-fuel revenue to be paid by the lessee.

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- Definition

Represents the term of renewal option available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property, by the lessor or lessee, respectively. Such receivable is reduced by allowances attributable to, for instance, credit risk associated with a lessee.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 35

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6453741&loc=d3e40879-112712

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-Name Accounting Standards Codification

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-SubTopic 20

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-Publisher FASB

-Name FASB Technical Bulletin (FTB)

-Number 85-3

-Paragraph 2

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 19

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.8)

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- Definition

The increase (decrease) during the reporting period in the amount due that is the result of the cumulative difference between actual rent due and rental income recognized on a straight-line basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 28

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Accounting Standards Codification

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-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

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- Definition

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

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- Definition

The aggregate revenue from real estate operations during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Article 5

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-Paragraph 1

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-Publisher FASB

-Name Accounting Standards Codification

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-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

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Significant Tenant (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended							9 Months Ended	1 Months Ended	3 Months Ended	9 Months Ended	1 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2011 agreement property	Sep. 30, 2010	Sep. 30, 2011 Y agreement property	Sep. 30, 2010	Sep. 30, 2011 Lessee of real estate investments Travel Centers of America LLC	Jan. 31, 2011 Lessee of real estate investments Travel Centers of America LLC agreement	Dec. 31, 2010 Lessee of real estate investments Travel Centers of America LLC	Sep. 30, 2011 Lessee of real estate investments Travel Centers of America LLC Travel centers agreement property	Sep. 30, 2011 Lessee of real estate investments Travel Centers of America LLC Travel centers TA No. 1 property	Sep. 30, 2011 Lessee of real estate investments Travel Centers of America LLC Travel centers TA No. 2 option Y property	Feb. 29, 2012 Lessee of real estate investments TA No. 1	Sep. 30, 2011 Lessee of real estate investments TA No. 1	Sep. 30, 2011 Lessee of real estate investments TA No. 1	Jan. 31, 2013 Lessee of real estate investments TA No. 2	Sep. 30, 2011 Lessee of real estate investments TA No. 2	Sep. 30, 2011 Travel Centers of America LLC Travel centers	Sep. 30, 2010 Travel Centers of America LLC Travel centers	Sep. 30, 2011 Travel Centers of America LLC Travel centers	Sep. 30, 2010 Travel Centers of America LLC Travel centers
Significant tenant disclosures
Number of real estate properties leased								185	145	40
Number of management agreements or leases	8		8					2
Number of renewal options available										2
Term of renewal option (in years)										15
Percentage of non-fuel revenue (as a percent)								3.00%
Percentage of fuel revenue (as a percent)								0.30%
Deferred rent due							$ 150,000
Number of lease agreements modified by an amendment						2
Deferred rent due in December 2022					107,085
Deferred rent due in June 2024					42,915
Minimum annual rent payable to entity, prior to modification													165,122		66,177
Minimum annual rent payable to the entity											142,806		135,139		54,160
Approximate additional annual ground rent													5,027
Annual percentage rent to be waived starting in 2013														2,500
Adjustments included in rental income necessary to record rent on the straight line basis												1,195	3,594
Rental income	$ 72,305	$ 81,695	$ 230,078	$ 241,774												$ 50,597	$ 47,871	$ 150,683	$ 141,920