CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 46,404	$ 65,053	$ 83,868
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation		48,629	46,160
Amortization of Debt Issuance Costs	845	1,625	1,700
Other Amortization, including Stock Based Compensation		14,156	13,638
Impairment of Real Estate	0	0	2,756
Provision for Bad Debt		0	165
Equity in (Income) Loss of Joint Venture	2	(16,360)	2
Distributions from Joint Venture		16,084	0
Gain on Sale of Real Estate	(25,067)	(889)	(45,156)
Loss from Retirement of Debt	0	0	39
Payments to Settle Derivative Instruments	0	(3,149)	0
Straight-line Rental Income and Expense, Net		(5,926)	(1,016)
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net		(2,839)	(3,169)
Increase (Decrease) in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits		3,734	(5,170)
Net Cash Provided by Operating Activities		120,118	93,817
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate		(52,395)	(87,733)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs		(119,174)	(121,169)
Net Proceeds from Sales of Investments in Real Estate		11,179	95,603
Contributions to and Investments in Joint Venture		0	(25,190)
Distributions from Joint Venture		8,586	1,829
Other Investing Activity		(5,758)	(2,823)
Net Cash Used in Investing Activities		(157,562)	(139,483)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing and Equity Issuance Costs		0	(2,842)
Proceeds from Issuance of Common Stock		0	145,584
Tax Paid on Shares Withheld		(4,384)	(6,020)
Common Stock Dividends and Unit Distributions Paid		(57,764)	(53,561)
Repayments on Mortgage Loans Payable		(75,336)	(161,964)
Proceeds from Senior Unsecured Notes		0	300,000
Proceeds from Unsecured Credit Facility		187,000	217,000
Repayments on Unsecured Credit Facility		(29,000)	(361,500)
Net Cash Provided by Financing Activities		20,516	76,697
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash		(16,928)	31,031
Cash, Cash Equivalents and Restricted Cash, Beginning of Year		50,373	46,482
Cash, Cash Equivalents and Restricted Cash, End of Period	77,513	33,445	77,513
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Expense Capitalized in Connection with Development Activity		2,320	3,317
Cash Paid for Operating Lease Liabilities		613	0
Supplemental Schedule of Non-Cash Operating Activities:
Operating Lease Liabilities Arising from Obtaining Right-of-Use Assets		12,400	0
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable	28,771	30,281	28,771
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0	0
Assumption of Indebtedness and Other Liabilities in Connection with the Acquisition of Real Estate		290	11,705
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate		48,344	27,797
Write-off of Fully Depreciated Assets		(19,646)	(22,936)
Noncontrolling Interest
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	1,195
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	(7,318)	0	(12,327)
Common Stock
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	6	0	10
Additional Paid-in- Capital
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	7,312	0	12,317
Common Stock
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units			12,327
First Industrial, L.P.
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	46,404	65,053	83,868
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation		48,629	46,160
Amortization of Debt Issuance Costs	845	1,625	1,700
Other Amortization, including Stock Based Compensation		14,156	13,638
Impairment of Real Estate	0	0	2,756
Provision for Bad Debt		0	165
Equity in (Income) Loss of Joint Venture	2	(16,360)	2
Distributions from Joint Venture		16,084	0
Gain on Sale of Real Estate	(25,067)	(889)	(45,156)
Loss from Retirement of Debt	0	0	39
Payments to Settle Derivative Instruments	0	(3,149)	0
Straight-line Rental Income and Expense, Net		(5,926)	(1,016)
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net		(2,780)	(3,226)
Increase (Decrease) in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits		3,734	(5,170)
Net Cash Provided by Operating Activities		120,177	93,760
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate		(52,395)	(87,733)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs		(119,174)	(121,169)
Net Proceeds from Sales of Investments in Real Estate		11,179	95,603
Contributions to and Investments in Joint Venture		0	(25,190)
Distributions from Joint Venture		8,586	1,829
Other Investing Activity		(5,758)	(2,823)
Net Cash Used in Investing Activities		(157,562)	(139,483)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing and Equity Issuance Costs		0	(2,842)
Proceeds from Issuance of Common Stock		0	145,584
Tax Paid on Shares Withheld		(4,384)	(6,020)
Common Stock Dividends and Unit Distributions Paid		(57,764)	(53,561)
Contributions from Noncontrolling Interests		5	121
Distributions to Noncontrolling Interests		(64)	(64)
Repayments on Mortgage Loans Payable		(75,336)	(161,964)
Proceeds from Senior Unsecured Notes		0	300,000
Proceeds from Unsecured Credit Facility		187,000	217,000
Repayments on Unsecured Credit Facility		(29,000)	(361,500)
Net Cash Provided by Financing Activities		20,457	76,754
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash		(16,928)	31,031
Cash, Cash Equivalents and Restricted Cash, Beginning of Year		50,373	46,482
Cash, Cash Equivalents and Restricted Cash, End of Period	77,513	33,445	77,513
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Expense Capitalized in Connection with Development Activity		2,320	3,317
Cash Paid for Operating Lease Liabilities		613	0
Supplemental Schedule of Non-Cash Operating Activities:
Operating Lease Liabilities Arising from Obtaining Right-of-Use Assets		12,400	0
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable	28,771	30,281	28,771
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0	0
Assumption of Indebtedness and Other Liabilities in Connection with the Acquisition of Real Estate		290	11,705
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate		48,344	27,797
Write-off of Fully Depreciated Assets		(19,646)	(22,935)
First Industrial, L.P. | Limited Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	1,195
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	(7,318)	0	(12,327)
First Industrial, L.P. | General Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	45,187
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	$ 7,318	$ 0	$ 12,327