XML 67 R33.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Investment in Real Estate - Fair Value Measurements on Non-Recurring Basis (Detail) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2013
Fair Value Assets Measured On Nonrecurring Basis [Line Items] |  |
Long-lived Assets Sold Impairment | $ (1,047) | [1]
Quoted Prices in Active Markets for Identical Assets (Level 1) |  |
Fair Value Assets Measured On Nonrecurring Basis [Line Items] |  |
Long-lived Asssets Held for Sale | 0 |
Significant Other Observable Inputs (Level 2) |  |
Fair Value Assets Measured On Nonrecurring Basis [Line Items] |  |
Long-lived Asssets Held for Sale | 0 |
Unobservable Inputs (Level 3) |  |
Fair Value Assets Measured On Nonrecurring Basis [Line Items] |  |
Long-lived Asssets Held for Sale | 6,875 | [1]
Fair Value, Measurements, Nonrecurring [Member] |  |
Fair Value Assets Measured On Nonrecurring Basis [Line Items] |  |
Long-lived Asssets Held for Sale | $ 6,875 | [1]
[1] | Excludes industrial properties for which impairment of $1,605 was recorded during the nine months ended September 30, 2013 since the related assets are sold or recorded at carrying value, which is lower than estimated fair value at September 30, 2013.

X
- Details
Name: | fr_FairValueAssetsAndLiabilitiesMeasuredOnNonrecurringBasisLineItems
Namespace Prefix: | fr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long Lived Assets Sold Impairment. + References No definition available. + Details
Name: | fr_LongLivedAssetsSoldImpairment
Namespace Prefix: | fr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Long-lived assets that are held for sale apart from normal operations and anticipated to be sold in less than one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 33 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
Name: | us-gaap_AssetsHeldForSaleLongLivedFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant