Stockholders' Equity of the Company and Partners' Capital of the Operating Partnership - Summary of Changes in Noncontrolling Interest (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Noncontrolling Interest [Line Items]
Beginning Balance	$ 48,077
Net Income	1,172	$ 782
Other Comprehensive Income	6,549
Common Stock Dividends and Unit Distributions	(27,107)
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0
Retirement of Limited Partner Units	(934)
Reallocation - Additional Paid-in-Capital	0
Ending Balance	43,006
Noncontrolling Interest
Noncontrolling Interest [Line Items]
Beginning Balance	48,077	43,184
Net Income	1,172	782
Other Comprehensive Income	183	76
Common Stock Dividends and Unit Distributions	(775)	(848)
Conversion of Limited Partner Units to Common Stock / General Partner Units	(5,009)	0
Retirement of Limited Partner Units	(934)	0
Reallocation - Additional Paid-in-Capital	292	(38)
Ending Balance	43,006	43,156
First Industrial, L.P.
Noncontrolling Interest [Line Items]
Beginning Balance	779
Net Income	21	27
Other Comprehensive Income	6,549
Contributions	116
Distributions	(21)
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0
Retirement of Limited Partner Units	(934)
Ending Balance	895
First Industrial, L.P. | Noncontrolling Interest
Noncontrolling Interest [Line Items]
Beginning Balance	779	956
Net Income	21	27
Contributions	116	7
Distributions	(21)	(17)
Ending Balance	$ 895	$ 973