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Represents the amount of amortization of deferred leasing costs expected to be recognized after the fifth succeeding fiscal year.

No definition available.

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Represents the amount of amortization of deferred leasing costs expected to be recognized during year five of the five succeeding fiscal years.

No definition available.

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Represents the amount of amortization of deferred leasing costs expected to be recognized during year four of the five succeeding fiscal years.

No definition available.

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Represents the amount of amortization of deferred leasing costs expected to be recognized during year one of the five succeeding fiscal years.

No definition available.

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Represents the amount of amortization of deferred leasing costs expected to be recognized during year three of the five succeeding fiscal years.

No definition available.

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Represents the amount of amortization of deferred leasing costs expected to be recognized during year two of the five succeeding fiscal years.

No definition available.

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Represents the amount of amortization of deferred financing fees expected to be recognized after the fifth succeeding fiscal year.

No definition available.

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Represents the amount of amortization of deferred financing fees expected to be recognized during year five of the five succeeding fiscal years.

No definition available.

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Represents the amount of amortization of deferred financing fees expected to be recognized during year four of the five succeeding fiscal years.

No definition available.

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Represents the amount of amortization of deferred financing fees expected to be recognized during year one of the five succeeding fiscal years.

No definition available.

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Represents the amount of amortization of deferred financing fees expected to be recognized during year three of the five succeeding fiscal years.

No definition available.

Name:	gov_DeferredFinanceCostsFutureAmortizationExpenseYearThree
Namespace Prefix:	gov_
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Represents the amount of amortization of deferred financing fees expected to be recognized during year two of the five succeeding fiscal years.

No definition available.

Name:	gov_DeferredFinanceCostsFutureAmortizationExpenseYearTwo
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Represents the increase or decrease in rental income from amortization of capitalized above market and below market leases.

No definition available.

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Represents the maximum original maturity period of cash and short term investments.

No definition available.

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Represents the percentage of ownership in the subsidiary.

No definition available.

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Balance Type:	na
Period Type:	duration

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For an unclassified balance sheet, the accumulated amortization, as of the reporting date, representing the periodic charge to earnings of deferred costs which are associated with debt obligations existing as of the end of the period.

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

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-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(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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For an unclassified balance sheet, the accumulated amortization, as of the reporting date, which represents the periodic charge to earnings of initial direct costs which have been deferred and are being allocated over the lease term in proportion to the recognition of rental income.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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For an unclassified balance sheet, this element represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. This amount is before considering accumulated amortization representing the periodic charge to earnings to recognize the deferred costs over the term of the related lease.

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For an unclassified balance sheet, the amount as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. Such amount is before the consideration of accumulated amortization.

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-Name Accounting Principles Board Opinion (APB)

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-Paragraph 16

-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 835

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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.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.8)

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-Publisher FASB

-Name FASB Technical Bulletin (FTB)

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-Paragraph 2

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Amount of amortization expense expected to be recognized after the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

No definition available.

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Amount of amortization expense expected to be recognized during the next fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the fifth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the fourth fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the third fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of amortization expense expected to be recognized during the second fiscal year following the latest fiscal year for assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Name:	us-gaap_FiniteLivedIntangibleAssetsLineItems
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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

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Difference between actual rental income due and rental income recognized on a straight-line basis.