v3.25.4
Accumulated Other Comprehensive Income (Changes in AOCI) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance $ 2,746,028 $ 2,635,105
Ending Balance 2,758,930 2,746,028
Derivative Instruments    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 20,485 22,842
Other Comprehensive Income (Loss), Before Reclassifications (2,996) 20,410
Amounts Reclassified from Accumulated Other Comprehensive (Income) Loss (14,233) (22,767)
Net Current Period Other Comprehensive Income (Loss) (17,229) (2,357)
Ending Balance 3,256 20,485
Comprehensive (Loss) Income Attributable to Noncontrolling Interest    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance (549) (570)
Other Comprehensive Income (Loss), Before Reclassifications 452 21
Amounts Reclassified from Accumulated Other Comprehensive (Income) Loss 0 0
Net Current Period Other Comprehensive Income (Loss) 452 21
Ending Balance (97) (549)
Total for Company    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 19,936 22,272
Other Comprehensive Income (Loss), Before Reclassifications (2,544) 20,431
Amounts Reclassified from Accumulated Other Comprehensive (Income) Loss (14,233) (22,767)
Net Current Period Other Comprehensive Income (Loss) (16,777) (2,336)
Ending Balance 3,159 19,936
First Industrial, L.P. | Total for Operating Partnership    
Accumulated Other Comprehensive Income (Loss) [Line Items]    
Beginning Balance 20,485 22,842
Other Comprehensive Income (Loss), Before Reclassifications (2,996) 20,410
Amounts Reclassified from Accumulated Other Comprehensive (Income) Loss (14,233) (22,767)
Net Current Period Other Comprehensive Income (Loss) (17,229) (2,357)
Ending Balance $ 3,256 $ 20,485