CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues:
Rental Income	$ 289,858	$ 281,186	$ 259,609
Tenant Recoveries and Other Income	88,162	84,637	87,100
Total Revenues	378,020	365,823	346,709
Expenses:
Property Expenses	112,324	114,628	114,499
General and Administrative	26,703	25,362	23,418
Acquisition Costs	491	1,403	960
Impairment of Real Estate	0	626	0
Depreciation and Other Amortization	117,282	113,814	111,897
Total Expenses	256,800	255,833	250,774
Other Income (Expense):
Gain (Loss) on Sale of Real Estate	68,202	48,906	(83)
Interest Expense	(59,430)	(67,424)	(72,178)
Amortization of Deferred Financing Costs	(3,219)	(3,159)	(3,098)
Mark-to-Market and Settlement Loss on Interest Rate Protection Agreements	0	(11,546)	0
Loss from Retirement of Debt	0	0	(655)
Total Other Income (Expense)	5,553	(33,223)	(76,014)
Income from Continuing Operations Before Equity in Income of Joint Ventures and Income Tax Provision	126,773	76,767	19,921
Equity in Income of Joint Ventures	0	55	3,499
Income Tax Provision	(1,089)	(117)	(238)
Income from Continuing Operations	125,684	76,705	23,182
Discontinued Operations:
Income Attributable to Discontinued Operations	0	0	1,835
Gain on Sale of Real Estate	0	0	25,988
Income from Discontinued Operations	0	0	27,823
Net Income	125,684	76,705	51,005
Less: Net Income Attributable to the Noncontrolling Interest	(4,452)	(2,903)	(1,895)
Net Income Attributable to Common Stockholders/Unitholders	121,232	73,802	49,110
Less: Preferred Dividends/Unit Distributions	0	0	(1,019)
Less: Redemption of Preferred Stock/Units	0	0	(1,462)
Net Income Available to Common Stockholders/Unitholders and Participating Securities	$ 121,232	$ 73,802	$ 46,629
Basic Earnings Per Share/Unit:
Income from Continuing Operations Available to Common Stockholders/Unitholders	$ 1.05	$ 0.67	$ 0.18
Income from Discontinued Operations Attributable to Common Stockholders/Unitholders	0.00	0.00	0.24
Net Income Available to Common Stockholders/Unitholders	1.05	0.67	0.42
Diluted Earnings Per Share/Unit:
Income from Continuing Operations Available to Common Stockholders/Unitholders	1.05	0.66	0.18
Income from Discontinued Operations Attributable to Common Stockholders/Unitholders	0.00	0.00	0.24
Net Income Available to Common Stockholders/Unitholders	1.05	0.66	0.42
Distributions Per Share/Unit	$ 0.76	$ 0.51	$ 0.41
Weighted Average Shares/Units Outstanding - Basic	115,030	110,352	109,922
Weighted Average Shares/Units Outstanding - Diluted	115,370	110,781	110,325
First Industrial, L.P.
Revenues:
Rental Income	$ 289,858	$ 281,186	$ 259,609
Tenant Recoveries and Other Income	88,162	84,637	87,100
Total Revenues	378,020	365,823	346,709
Expenses:
Property Expenses	112,324	114,628	114,499
General and Administrative	26,703	25,247	23,166
Acquisition Costs	491	1,403	960
Impairment of Real Estate	0	626	0
Depreciation and Other Amortization	117,282	113,814	111,897
Total Expenses	256,800	255,718	250,522
Other Income (Expense):
Gain (Loss) on Sale of Real Estate	68,202	48,906	(83)
Interest Expense	(59,430)	(67,424)	(72,178)
Amortization of Deferred Financing Costs	(3,219)	(3,159)	(3,098)
Mark-to-Market and Settlement Loss on Interest Rate Protection Agreements	0	(11,546)	0
Loss from Retirement of Debt	0	0	(655)
Total Other Income (Expense)	5,553	(33,223)	(76,014)
Income from Continuing Operations Before Equity in Income of Joint Ventures and Income Tax Provision	126,773	76,882	20,173
Equity in Income of Joint Ventures	0	55	3,499
Income Tax Provision	(1,089)	(117)	(238)
Income from Continuing Operations	125,684	76,820	23,434
Discontinued Operations:
Income Attributable to Discontinued Operations	0	0	1,835
Gain on Sale of Real Estate	0	0	25,988
Income from Discontinued Operations	0	0	27,823
Net Income	125,684	76,820	51,257
Less: Net Income Attributable to the Noncontrolling Interest	(137)	(138)	(72)
Net Income Attributable to Common Stockholders/Unitholders	125,547	76,682	51,185
Less: Preferred Dividends/Unit Distributions	0	0	(1,019)
Less: Redemption of Preferred Stock/Units	0	0	(1,462)
Net Income Available to Common Stockholders/Unitholders and Participating Securities	$ 125,547	$ 76,682	$ 48,704
Basic Earnings Per Share/Unit:
Income from Continuing Operations Available to Common Stockholders/Unitholders	$ 1.05	$ 0.67	$ 0.18
Income from Discontinued Operations Attributable to Common Stockholders/Unitholders	0.00	0.00	0.24
Net Income Available to Common Stockholders/Unitholders	1.05	0.67	0.42
Diluted Earnings Per Share/Unit:
Income from Continuing Operations Available to Common Stockholders/Unitholders	1.05	0.66	0.18
Income from Discontinued Operations Attributable to Common Stockholders/Unitholders	0.00	0.00	0.24
Net Income Available to Common Stockholders/Unitholders	1.05	0.66	0.42
Distributions Per Share/Unit	$ 0.76	$ 0.51	$ 0.41
Weighted Average Shares/Units Outstanding - Basic	119,274	114,709	114,388
Weighted Average Shares/Units Outstanding - Diluted	119,614	115,138	114,791