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Stockholders’ Equity of the Company and Partners' Capital of the Operating Partnership - Common Stock and Units Roll-Forward (Details) - shares | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Class of Stock [Line Items] |  |  |
Common Stock/Units, Outstanding, Beginning Balance | 117,107,746 |  |
Issuance of Restricted Stock/Units Awards | 471,744 |  |
Common Stock/Units, Outstanding, Ending Balance | 119,883,180 | 117,107,746 |
Common Stock / Operating Partnership Units |  |  |
Class of Stock [Line Items] |  |  |
Common Stock/Units, Outstanding, Beginning Balance | 117,107,746 | 111,027,225 | 110,600,866
Issuance of Common Stock/Contribution of General Partner Units,, Including Vesting of LTIP Unit Awards | 2,560,000 | 5,600,000 | 224,990
Issuance of Restricted Stock/Units Awards | 275,793 | 322,833 | 234,360
Repurchase and Retirement of Restricted Stock/Unit Awards | (91,513) | (108,644) | (101,921)
Conversion of Limited Partner Units | 31,154 | 266,332 | 68,930
Common Stock/Units, Outstanding, Ending Balance | 119,883,180 | 117,107,746 | 111,027,225
First Industrial, L.P. | Common Stock / Operating Partnership Units |  |  |
Class of Stock [Line Items] |  |  |
Common Stock/Units, Outstanding, Beginning Balance | 121,147,121 | 115,332,932 | 114,975,503
Issuance of Common Stock/Contribution of General Partner Units,, Including Vesting of LTIP Unit Awards | 2,560,000 | 5,600,000 | 224,990
Issuance of Restricted Stock/Units Awards | 275,793 | 322,833 | 234,360
Repurchase and Retirement of Restricted Stock/Unit Awards | (91,513) | (108,644) | (101,921)
Conversion of Limited Partner Units | 0 | 0 | 0
Common Stock/Units, Outstanding, Ending Balance | 123,891,401 | 121,147,121 | 115,332,932

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