XML 28 R76.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Income Taxes - Income Tax Purpose Distribution Paid to Preferred Shareholders are Classified as Ordinary Income (Detail) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Series J Preferred Stock [Member] |  |  |  |
Income Tax [Line Items] |  |  |  |
Ordinary Income |  |  | $ 0.3130 | $ 1.4652
Long-term Capital Gains |  |  |  |
Unrecaptured Section 1250 Gain |  |  |  | $ 0.2423
Return of Capital |  | $ 2.2657 | $ 1.0402 |
Qualified Dividends |  |  | $ 0.0062 | $ 0.1050
Preferred Distribution per Depository Share | $ 0.407812 | $ 2.2657 | $ 1.3594 | $ 1.8125
Ordinary Income as a Percentage of Distribution |  | 0.00% | 23.02% | 80.84%
Long-term Capital Gains as a Percentage of Distribution |  | 0.00% | 0.00% | 0.00%
Unrecaptured Section 1250 Gain as a Percentage of Distribution |  | 0.00% | 0.00% | 13.37%
Return of Capital as a Percentage of Distribution |  | 100.00% | 76.52% | 0.00%
Qualified Dividends as a Percentage of Distribution |  | 0.00% | 0.46% | 5.79%
Preferred Distribution, Percentage |  | 100.00% | 100.00% | 100.00%
Series K Preferred Stock [Member] |  |  |  |
Income Tax [Line Items] |  |  |  |
Ordinary Income |  |  | $ 0.3130 | $ 1.4652
Long-term Capital Gains |  |  |  |
Unrecaptured Section 1250 Gain |  |  |  | $ 0.2423
Return of Capital |  | $ 2.2657 | $ 1.0402 |
Qualified Dividends |  |  | $ 0.0062 | $ 0.1050
Preferred Distribution per Depository Share |  | $ 2.2657 | $ 1.3594 | $ 1.8125
Ordinary Income as a Percentage of Distribution |  | 0.00% | 23.02% | 80.84%
Long-term Capital Gains as a Percentage of Distribution |  | 0.00% | 0.00% | 0.00%
Unrecaptured Section 1250 Gain as a Percentage of Distribution |  | 0.00% | 0.00% | 13.37%
Return of Capital as a Percentage of Distribution |  | 100.00% | 76.52% | 0.00%
Qualified Dividends as a Percentage of Distribution |  | 0.00% | 0.46% | 5.79%
Preferred Distribution, Percentage |  | 100.00% | 100.00% | 100.00%
Depositary Shares [Member] | Series J Preferred Stock [Member] |  |  |  |
Income Tax [Line Items] |  |  |  |
Ordinary Income |  |  |  |
Long-term Capital Gains |  |  |  |
Unrecaptured Section 1250 Gain |  |  |  |
Return of Capital |  | $ 2.2203 |  |
Qualified Dividends |  |  |  |
Preferred Distribution per Depository Share |  | $ 2.2203 |  |
Ordinary Income as a Percentage of Distribution |  |  |  |
Long-term Capital Gains as a Percentage of Distribution |  | 0.00% |  |
Unrecaptured Section 1250 Gain as a Percentage of Distribution |  |  |  |
Return of Capital as a Percentage of Distribution |  | 100.00% |  |
Qualified Dividends as a Percentage of Distribution |  |  |  |
Preferred Distribution, Percentage |  | 100.00% |  |

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

X
- Definition Long term capital gains as percentage of distributions. + References No definition available. + Details
Name: | fr_LongTermCapitalGainsAsPercentageOfDistributions
Namespace Prefix: | fr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Long term capital gains per depositary share. + References No definition available. + Details
Name: | fr_LongTermCapitalGainsPerDepositaryShare
Namespace Prefix: | fr_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Ordinary Income as percentage of distributions. + References No definition available. + Details
Name: | fr_OrdinaryIncomeAsPercentageOfDistributions
Namespace Prefix: | fr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Ordinary income per depositary share. + References No definition available. + Details
Name: | fr_OrdinaryIncomePerDepositaryShare
Namespace Prefix: | fr_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Preferred distributions percentage. + References No definition available. + Details
Name: | fr_PreferredDistributionsPercentage
Namespace Prefix: | fr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Qualified dividends as percentage of distributions. + References No definition available. + Details
Name: | fr_QualifiedDividendsAsPercentageOfDistributions
Namespace Prefix: | fr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Qualified dividends per depositary share. + References No definition available. + Details
Name: | fr_QualifiedDividendsPerDepositaryShare
Namespace Prefix: | fr_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Return of capital as percentage of distributions. + References No definition available. + Details
Name: | fr_ReturnOfCapitalAsPercentageOfDistributions
Namespace Prefix: | fr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Return of capital per depositary share. + References No definition available. + Details
Name: | fr_ReturnOfCapitalPerDepositaryShare
Namespace Prefix: | fr_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unrecaptured section gain as percentage of distributions. + References No definition available. + Details
Name: | fr_UnrecapturedSectionGainAsPercentageOfDistributions
Namespace Prefix: | fr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unrecaptured section gain per depositary share. + References No definition available. + Details
Name: | fr_UnrecapturedSectionGainPerDepositaryShare
Namespace Prefix: | fr_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate dividends paid during the period for each share of preferred stock outstanding. + References No definition available. + Details
Name: | us-gaap_PreferredStockDividendsPerShareCashPaid
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration