CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues:
Rental Income	$ 303,874	$ 289,858	$ 281,186
Tenant Recoveries and Other Income	92,528	88,162	84,637
Total Revenues	396,402	378,020	365,823
Expenses:
Property Expenses	113,494	112,324	114,628
General and Administrative	28,079	26,703	25,362
Acquisition Costs	0	491	1,403
Impairment of Real Estate	0	0	626
Depreciation and Other Amortization	116,364	117,282	113,814
Total Expenses	257,937	256,800	255,833
Other Income (Expense):
Gain on Sale of Real Estate	131,269	68,202	48,906
Interest Expense	(57,199)	(59,430)	(67,424)
Amortization of Debt Issuance Costs	(3,162)	(3,219)	(3,159)
Settlement Gain (Loss) on Interest Rate Protection Agreements	1,896	0	(11,546)
Loss from Retirement of Debt	(1,775)	0	0
Total Other Income (Expense)	71,029	5,553	(33,223)
Income from Operations Before Equity in Income of Joint Ventures and Income Tax Provision	209,494	126,773	76,767
Equity in Income of Joint Ventures	0	0	55
Income Tax Provision	(1,193)	(1,089)	(117)
Net Income	208,301	125,684	76,705
Less: Net Income Attributable to the Noncontrolling Interest	(6,845)	(4,452)	(2,903)
Net Income Available to Common Stockholders / Unitholders and Participating Securities	$ 201,456	$ 121,232	$ 73,802
Basic Earnings Per Share / Unit:
Net Income Available to Common Stockholders/Unitholders	$ 1.70	$ 1.05	$ 0.67
Diluted Earnings Per Share / Unit:
Net Income Available to Common Stockholders/Unitholders	1.69	1.05	0.66
Distributions Per Share/Unit	$ 0.84	$ 0.76	$ 0.51
Weighted Average Shares/Units Outstanding - Basic	118,272	115,030	110,352
Weighted Average Shares / Units Outstanding - Diluted	118,787	115,370	110,781
First Industrial, L.P.
Revenues:
Rental Income	$ 303,874	$ 289,858	$ 281,186
Tenant Recoveries and Other Income	92,528	88,162	84,637
Total Revenues	396,402	378,020	365,823
Expenses:
Property Expenses	113,494	112,324	114,628
General and Administrative	28,079	26,703	25,247
Acquisition Costs	0	491	1,403
Impairment of Real Estate	0	0	626
Depreciation and Other Amortization	116,364	117,282	113,814
Total Expenses	257,937	256,800	255,718
Other Income (Expense):
Gain on Sale of Real Estate	131,269	68,202	48,906
Interest Expense	(57,199)	(59,430)	(67,424)
Amortization of Debt Issuance Costs	(3,162)	(3,219)	(3,159)
Settlement Gain (Loss) on Interest Rate Protection Agreements	1,896	0	(11,546)
Loss from Retirement of Debt	(1,775)	0	0
Total Other Income (Expense)	71,029	5,553	(33,223)
Income from Operations Before Equity in Income of Joint Ventures and Income Tax Provision	209,494	126,773	76,882
Equity in Income of Joint Ventures	0	0	55
Income Tax Provision	(1,193)	(1,089)	(117)
Net Income	208,301	125,684	76,820
Less: Net Income Attributable to the Noncontrolling Interest	(143)	(137)	(138)
Net Income Available to Common Stockholders / Unitholders and Participating Securities	$ 208,158	$ 125,547	$ 76,682
Basic Earnings Per Share / Unit:
Net Income Available to Common Stockholders/Unitholders	$ 1.70	$ 1.05	$ 0.67
Diluted Earnings Per Share / Unit:
Net Income Available to Common Stockholders/Unitholders	1.69	1.05	0.66
Distributions Per Share/Unit	$ 0.84	$ 0.76	$ 0.51
Weighted Average Shares/Units Outstanding - Basic	122,306	119,274	114,709
Weighted Average Shares / Units Outstanding - Diluted	122,821	119,614	115,138