Stockholders’ Equity of the Company and Partners' Capital of the Operating Partnership - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	2 Months Ended	3 Months Ended						12 Months Ended
	Mar. 06, 2014	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Mar. 13, 2014	Apr. 11, 2013	Dec. 21, 2012	Mar. 01, 2012	Aug. 21, 2006	Jan. 13, 2006	May. 27, 2004
Class of Stock [Line Items]
Operating Partnership, aggregate cash payment								$ 95,285
Operating Partnership, shares								4,305,707
Cost associated with the redemptions		$ 0	$ 0	$ 0	$ 1,462			$ 0	$ 1,462	$ 5,667
Preferred stock shares authorized								10,000,000
Preferred stock outstanding								0
Conversion of Units / Limited Partner Units to Common Stock / General Partner Units								$ 0	0	0
Net proceeds from the issuance of common stock								$ 0	0	174,081
Series F Preferred Stock/Units
Class of Stock [Line Items]
Depositary Shares issued																	50,000
Depositary Share Percentage Per Share																	1.00%
Dividend rate per share	6.275%							6.236%
Par value per share																	$ 0.01
Initial offering price per depository share																	1,000.00
Redemption price per share																	$ 1,000.00
Aggregate redemption price																	$ 50,000
Dividend per Depositary share					$ 11.3299
Total dividends, Depositary Shares					$ 566
Cost associated with the redemptions									949
Derivative, Basis Spread on Variable Rate								2.375%
Number Of Years Of Treasury Rate One	30 years
Number Of Years Of Treasury Rate Two	10 years
LIBOR rate	3-month LIBOR
Series G Preferred Stock/Units
Class of Stock [Line Items]
Depositary Shares issued																	25,000
Depositary Share Percentage Per Share																	1.00%
Dividend rate per share								7.236%
Par value per share																	$ 0.01
Initial offering price per depository share																	1,000.00
Redemption price per share																	$ 1,000.00
Aggregate redemption price																	$ 25,000
Dividend per Depositary share					$ 36.18
Total dividends, Depositary Shares					$ 905
Cost associated with the redemptions									$ 513
Series J Preferred Stock/Units
Class of Stock [Line Items]
Depositary Shares issued																6,000,000
Depositary Share Percentage Per Share																0.01%
Dividend rate per share								7.25%
Par value per share																$ 0.01
Initial offering price per depository share																25.00
Redemption price per share																$ 25.00
Aggregate redemption price																$ 150,000
Dividend per Depositary share							$ 0.055382
Total dividends, Depositary Shares							$ 221
Cost associated with the redemptions										3,546
Depositary Shares redeemed												4,000,000	2,000,000
Series K Preferred Stock/Units
Class of Stock [Line Items]
Depositary Shares issued															2,000,000
Depositary Share Percentage Per Share															0.01%
Dividend rate per share								7.25%
Par value per share															$ 0.01
Initial offering price per depository share															25.00
Redemption price per share															$ 25.00
Aggregate redemption price															$ 50,000
Dividend per Depositary share						$ 0.090625
Total dividends, Depositary Shares						$ 181
Cost associated with the redemptions										$ 2,121
Common Stock
Class of Stock [Line Items]
Shares of common stock issued										8,400,000
Net proceeds from the issuance of common stock										$ 132,050
Convertible Common Stock
Class of Stock [Line Items]
Units converted to common stock								68,930	222,676	105,028
Conversion of Units / Limited Partner Units to Common Stock / General Partner Units								$ 673	$ 2,155	$ 996
ATM
Class of Stock [Line Items]
Shares of common stock issued										2,315,704
Net proceeds from the issuance of common stock										$ 41,735
Shares of company stock issuable under an at-the-market offering											13,300,000			12,500,000
Aggregate gross sale proceeds											$ 200,000			$ 125,000
First Industrial L.P.
Class of Stock [Line Items]
Cost associated with the redemptions		$ 0	$ 0	$ 0	$ 1,462			0	1,462	5,667
Conversion of Units / Limited Partner Units to Common Stock / General Partner Units								0	0	0
Net proceeds from the issuance of common stock								$ 0	$ 0	$ 174,081
First Industrial L.P. | Series F Preferred Stock/Units
Class of Stock [Line Items]
Dividend rate per share								6.236%
First Industrial L.P. | Series G Preferred Stock/Units
Class of Stock [Line Items]
Dividend rate per share								7.236%
First Industrial L.P. | Series J Preferred Stock/Units
Class of Stock [Line Items]
Dividend rate per share								7.25%
First Industrial L.P. | Series K Preferred Stock/Units
Class of Stock [Line Items]
Dividend rate per share								7.25%