XML 25 R29.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Investment in Real Estate - Additional Information (Detail) ft² in Thousands, $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 USD ($) ft² Land_Parcel Property | Jun. 30, 2014 USD ($) Property | Dec. 31, 2014 Property
Real Estate [Abstract] |  |  |
Number of industrial properties acquired | 2 |  |
Gross leasable area (GLA) of industrial properties acquired | ft² | 200 |  |
Purchase price of acquisitions | $ | $ 26,532 |  |
Number of industrial properties held for sale | 1 |  |
Gross leasable area (GLA) of industrial properties held for sale | ft² | 10 |  |
Number of industrial properties sold | 12 |  |
Gross leasable area (GLA) of industrial properties sold | ft² | 900 |  |
Number of land parcels sold | Land_Parcel | 1 |  |
Proceeds from the sale of industrial properties | $ | $ 42,611 |  |
Gain on sale of real estate | $ | $ 10,127 | $ 1,055 |
Number of sold industrial properties included in discontinued operations |  | 5 | 29

X
- Definition Number of industrial properties sold. + References No definition available. + Details
Name: | fr_NumberOfIndustrialPropertiesSold
Namespace Prefix: | fr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Land Parcels Sold + References No definition available. + Details
Name: | fr_NumberOfLandParcelsSold
Namespace Prefix: | fr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of sold industrial properties included in discontinued operations. + References No definition available. + Details
Name: | fr_NumberOfSoldIndustrialPropertiesIncludedInDiscontinuedOperations
Namespace Prefix: | fr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of industrial properties held for sale. + References No definition available. + Details
Name: | fr_NumberofIndustrialPropertiesHeldforSale
Namespace Prefix: | fr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Square footage of industrial properties sold. + References No definition available. + Details
Name: | fr_SquareFootageOfIndustrialPropertiesSold
Namespace Prefix: | fr_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | duration

X
- Definition Square Footage of Real Estate Properties Acquired. + References No definition available. + Details
Name: | fr_SquareFootageOfRealEstatePropertiesAcquired
Namespace Prefix: | fr_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | duration

X
- Definition Square footage of industrial properties held for sale. + References No definition available. + Details
Name: | fr_SquareFootageofIndustrialPropertiesHeldforSale
Namespace Prefix: | fr_
Data Type: | num:areaItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
Name: | us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnSaleOfProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The number of businesses acquired by the entity during the period. + References No definition available. + Details
Name: | us-gaap_NumberOfBusinessesAcquired
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow from sale of buildings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfBuildings
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RealEstateAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration