CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 24,340	$ 37,464
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation	24,376	22,953
Amortization of Debt Issuance Costs	831	855
Other Amortization, including Stock Based Compensation	7,022	6,626
Impairment of Real Estate	0	2,756
Provision for Bad Debt	0	88
Equity in Income of Joint Venture	(844)	0
Distributions from Joint Venture	568	0
Loss (Gain) on Sale of Real Estate	208	(20,089)
Loss from Retirement of Debt	0	39
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net and Operating Lease Right-of-Use Assets	(18,421)	(6,706)
Increase in Deferred Rent Receivable, Net	(3,028)	(713)
Increase (Decrease) in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits and Operating Lease Liabilities	6,677	(6,249)
Net Cash Provided by Operating Activities	41,729	37,024
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate	(18,499)	(49,865)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs	(43,402)	(63,994)
Net Proceeds from Sales of Investments in Real Estate	9,793	41,691
Distributions from Joint Venture	2,175	0
Other Investing Activity	(7,048)	(3,053)
Net Cash Used in Investing Activities	(56,981)	(75,221)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing and Equity Issuance Costs	0	(2,676)
Tax paid on Shares Withheld	(4,384)	(6,020)
Common Stock Dividends and Unit Distributions Paid	(28,042)	(26,565)
Repayments on Mortgage Loans Payable	(73,806)	(160,163)
Proceeds from Senior Unsecured Notes	0	300,000
Proceeds from Unsecured Credit Facility	121,000	162,000
Repayments on Unsecured Credit Facility	(19,000)	(206,500)
Net Cash (Used in) Provided by Financing Activities	(4,232)	60,076
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(19,484)	21,879
Cash, Cash Equivalents and Restricted Cash, Beginning of Year	50,373	46,482
Cash, Cash Equivalents and Restricted Cash, End of Period	30,889	68,361
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Expense Capitalized in Connection with Development Activity	944	1,602
Cash Paid for Operating Lease Liabilities	268	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	30,139	27,558
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0
Assumption of Indebtedness and Other Liabilities in Connection with the Acquisition of Real Estate	0	11,724
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate	43,002	32,006
Write-off of Fully Depreciated Assets	(11,176)	(13,663)
Noncontrolling Interest
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	537	1,172
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	(5,009)
Common Stock
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	4
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	0	5,005
First Industrial, L.P.
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	24,340	37,464
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation	24,376	22,953
Amortization of Debt Issuance Costs	831	855
Other Amortization, including Stock Based Compensation	7,022	6,626
Impairment of Real Estate	0	2,756
Provision for Bad Debt	0	88
Equity in Income of Joint Venture	(844)	0
Distributions from Joint Venture	568	0
Loss (Gain) on Sale of Real Estate	208	(20,089)
Loss from Retirement of Debt	0	39
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net and Operating Lease Right-of-Use Assets	(18,378)	(6,801)
Increase in Deferred Rent Receivable, Net	(3,028)	(713)
Increase (Decrease) in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits and Operating Lease Liabilities	6,677	(6,249)
Net Cash Provided by Operating Activities	41,772	36,929
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate	(18,499)	(49,865)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs	(43,402)	(63,994)
Net Proceeds from Sales of Investments in Real Estate	9,793	41,691
Distributions from Joint Venture	2,175	0
Other Investing Activity	(7,048)	(3,053)
Net Cash Used in Investing Activities	(56,981)	(75,221)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing and Equity Issuance Costs	0	(2,676)
Tax paid on Shares Withheld	(4,384)	(6,020)
Common Stock Dividends and Unit Distributions Paid	(28,042)	(26,565)
Contributions from Noncontrolling Interests	0	116
Distributions to Noncontrolling Interests	(43)	(21)
Repayments on Mortgage Loans Payable	(73,806)	(160,163)
Proceeds from Senior Unsecured Notes	0	300,000
Proceeds from Unsecured Credit Facility	121,000	162,000
Repayments on Unsecured Credit Facility	(19,000)	(206,500)
Net Cash (Used in) Provided by Financing Activities	(4,275)	60,171
Net (Decrease) Increase in Cash, Cash Equivalents and Restricted Cash	(19,484)	21,879
Cash, Cash Equivalents and Restricted Cash, Beginning of Year	50,373	46,482
Cash, Cash Equivalents and Restricted Cash, End of Period	30,889	68,361
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Expense Capitalized in Connection with Development Activity	944	1,602
Cash Paid for Operating Lease Liabilities	268	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	30,139	27,558
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	0
Assumption of Indebtedness and Other Liabilities in Connection with the Acquisition of Real Estate	0	11,724
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate	43,002	32,006
Write-off of Fully Depreciated Assets	(11,176)	(13,663)
First Industrial, L.P. | Limited Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	537	1,172
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	0	(5,009)
First Industrial, L.P. | General Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	23,777	36,271
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	$ 0	$ 5,009