v3.26.1
Earnings Per Share / Unit (EPS / EPU) - Computation of Basic and Diluted EPS / EPU (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Numerator:        
Net Income Available to Common Stockholders / Unitholders $ 77,053 $ 55,146 $ 220,091 $ 103,213
Denominator:        
Weighted Average Shares / Units - Basic 132,605 132,431 132,589 132,423
Performance Units (See Note 9) / Performance Units and certain Performance RLP Units (See Note 6) 63 48 65 63
Weighted Average Shares / Units - Diluted 132,668 132,479 132,654 132,486
Earnings Per Share/Unit, Basic [Abstract]        
Net Income Available to Common Stockholders / Unitholders - Basic $ 0.58 $ 0.42 $ 1.66 $ 0.78
Earnings Per Share/Unit, Diluted [Abstract]        
Net Income Available to Common Stockholders / Unitholders - Diluted $ 0.58 $ 0.42 $ 1.66 $ 0.78
First Industrial, L.P.        
Numerator:        
Net Income Available to Common Stockholders / Unitholders $ 79,531 $ 56,762 $ 227,218 $ 106,224
Denominator:        
Weighted Average Shares / Units - Basic 135,935 135,464 135,925 135,452
Performance Units (See Note 9) / Performance Units and certain Performance RLP Units (See Note 6) 538 421 558 548
Weighted Average Shares / Units - Diluted 136,473 135,885 136,483 136,000
Earnings Per Share/Unit, Basic [Abstract]        
Net Income Available to Common Stockholders / Unitholders - Basic $ 0.59 $ 0.42 $ 1.67 $ 0.78
Earnings Per Share/Unit, Diluted [Abstract]        
Net Income Available to Common Stockholders / Unitholders - Diluted $ 0.58 $ 0.42 $ 1.66 $ 0.78