Stockholders’ Equity of the Company and Partners' Capital of the Operating Partnership - Additional Information (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Class of Stock [Line Items]
Proceeds from the Issuance of Common Stock, Net of Underwriter's Discount	$ 145,584	$ 74,880
Conversion of Limited Partner Units to Common Stock / General Partner Units	$ 0	0
Limited Partners' Capital Account, Units Retired	33,333
Common Stock Dividends and Unit Distributions	$ 55,316
Common Stock / Operating Partnership Units
Class of Stock [Line Items]
Shares of Common Stock Issued	4,800,000
Proceeds from the Issuance of Common Stock, Net of Underwriter's Discount	$ 145,584
Conversion of Limited Partner Units to Common Stock / General Partner Units, Shares	1,019,677
Conversion of Limited Partner Units to Common Stock / General Partner Units	$ 12,327
Common Stock Dividends and Unit Distributions	55,316
First Industrial, L.P.
Class of Stock [Line Items]
Proceeds from the Issuance of Common Stock, Net of Underwriter's Discount	145,584	74,880
Conversion of Limited Partner Units to Common Stock / General Partner Units	$ 0	$ 0