XML 42 R36.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Indebtedness (Details 1) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 30, 2012
Senior Unsecured Notes Repurchases |
Principal Amount Repurchased | $ 87,355
Purchase Price | 89,328
2014 Notes [Member] |
Senior Unsecured Notes Repurchases |
Principal Amount Repurchased | 9,000
Purchase Price | 9,439
2028 Notes [Member] |
Senior Unsecured Notes Repurchases |
Principal Amount Repurchased | 55,955
Purchase Price | 57,041
2032 Notes [Member] |
Senior Unsecured Notes Repurchases |
Principal Amount Repurchased | 22,400
Purchase Price | $ 22,848

X
- Definition Principal amount of senior unsecured notes repurchased. + References No definition available. + Details
Name: | fr_PrincipalAmountOfSeniorUnsecuredNotesRepurchased
Namespace Prefix: | fr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Purchase price senior unsecured notes. + References No definition available. + Details
Name: | fr_PurchasePriceSeniorUnsecuredNotes
Namespace Prefix: | fr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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