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v3.2.0.727

Subsequent Events - Additional Information (Detail) $ in Thousands | 1 Months Ended | 6 Months Ended
--- | --- | ---
Aug. 03, 2015 USD ($) Land_Parcel Property | Jun. 30, 2015 USD ($) Land_Parcel Property
Subsequent Event [Line Items] |  |
Number of industrial properties sold | Property |  | 12
Number of land parcels sold | Land_Parcel |  | 1
Proceeds from the sale of industrial properties and land parcels |  | $ 42,611
Subsequent Events |  |
Subsequent Event [Line Items] |  |
Number of industrial properties sold | Property | 1 |
Number of land parcels sold | Land_Parcel | 1 |
Proceeds from the sale of industrial properties and land parcels | $ 1,307 |

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- Definition Number of industrial properties sold. + References No definition available. + Details
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Namespace Prefix: | fr_
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Balance Type: | na
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- Definition Number Of Land Parcels Sold + References No definition available. + Details
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Namespace Prefix: | fr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- 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
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Balance Type: | debit
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |