CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 115,398	$ 107,000
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation	69,397	70,697
Amortization of Debt Issuance Costs	2,550	2,336
Other Amortization, including Stock Based Compensation	20,516	22,059
Impairment of Real Estate	2,756	0
Provision for Bad Debt	267	181
Equity in Loss of Joint Venture	199	0
Gain on Sale of Real Estate	(53,291)	(52,140)
Loss from Retirement of Debt	39	1,653
Mark-to-Market Gain on Interest Rate Protection Agreements	0	(1,848)
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net	(5,639)	(6,792)
Increase in Deferred Rent Receivable, Net	(1,329)	(4,104)
Increase in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits	172	9,152
Net Cash Provided by Operating Activities	151,035	148,194
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate	(91,799)	(160,065)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs	(168,681)	(104,658)
Net Proceeds from Sales of Investments in Real Estate	116,166	95,233
Contributions to and Investments in Joint Venture	(25,190)	0
Distributions from Joint Venture	1,829	0
Other Investing Activity	(4,825)	(1,644)
Net Cash Used in Investing Activities	(172,500)	(171,134)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing and Equity Issuance Costs	(2,975)	(1,918)
Proceeds from the Issuance of Common Stock, Net of Underwriter's Discount	145,584	74,880
Repurchase and Retirement of Restricted Stock	(6,020)	(2,401)
Common Stock Dividends and Unit Distributions Paid	(81,605)	(74,508)
Repayments on Mortgage Loans Payable	(163,792)	(44,152)
Prepayments of Penalties Associated with Retirement of Debt	0	(1,453)
Proceeds from Senior Unsecured Notes	300,000	200,000
Repayments of Senior Unsecured Notes	0	(101,871)
Proceeds from Unsecured Credit Facility	217,000	326,000
Repayments on Unsecured Credit Facility	(361,500)	(358,500)
Net Cash Provided by Financing Activities	46,692	16,077
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	25,227	(6,863)
Cash, Cash Equivalents and Restricted Cash, Beginning of Year	46,482	21,461
Cash, Cash Equivalents and Restricted Cash, End of Period	71,709	14,598
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Expense Capitalized in Connection with Development Activity	4,867	3,014
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable	28,749	26,848
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	11,707	1,138
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate	31,288	23,247
Write-off of Fully Depreciated Assets	(33,047)	(27,455)
Noncontrolling Interest
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	2,986
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	(16,509)	(39)
Common Stock
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	13	0
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	16,496	39
Common Stock
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from the Issuance of Common Stock, Net of Underwriter's Discount	145,584
First Industrial, L.P.
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	115,398	107,000
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation	69,397	70,697
Amortization of Debt Issuance Costs	2,550	2,336
Other Amortization, including Stock Based Compensation	20,516	22,059
Impairment of Real Estate	2,756	0
Provision for Bad Debt	267	181
Equity in Loss of Joint Venture	199	0
Gain on Sale of Real Estate	(53,291)	(52,140)
Loss from Retirement of Debt	39	1,653
Mark-to-Market Gain on Interest Rate Protection Agreements	0	(1,848)
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net	(5,679)	(6,537)
Increase in Deferred Rent Receivable, Net	(1,329)	(4,104)
Increase in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits	172	9,152
Net Cash Provided by Operating Activities	150,995	148,449
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate	(91,799)	(160,065)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs	(168,681)	(104,658)
Net Proceeds from Sales of Investments in Real Estate	116,166	95,233
Contributions to and Investments in Joint Venture	(25,190)	0
Distributions from Joint Venture	1,829	0
Other Investing Activity	(4,825)	(1,644)
Net Cash Used in Investing Activities	(172,500)	(171,134)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing and Equity Issuance Costs	(2,975)	(1,918)
Proceeds from the Issuance of Common Stock, Net of Underwriter's Discount	145,584	74,880
Repurchase and Retirement of Restricted Stock	(6,020)	(2,401)
Common Stock Dividends and Unit Distributions Paid	(81,605)	(74,508)
Contributions from Noncontrolling Interests	124	29
Distributions to Noncontrolling Interests	(84)	(284)
Repayments on Mortgage Loans Payable	(163,792)	(44,152)
Prepayments of Penalties Associated with Retirement of Debt	0	(1,453)
Proceeds from Senior Unsecured Notes	300,000	200,000
Repayments of Senior Unsecured Notes	0	(101,871)
Proceeds from Unsecured Credit Facility	217,000	326,000
Repayments on Unsecured Credit Facility	(361,500)	(358,500)
Net Cash Provided by Financing Activities	46,732	15,822
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	25,227	(6,863)
Cash, Cash Equivalents and Restricted Cash, Beginning of Year	46,482	21,461
Cash, Cash Equivalents and Restricted Cash, End of Period	71,709	14,598
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Expense Capitalized in Connection with Development Activity	4,867	3,014
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable	28,749	26,848
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	11,707	1,138
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate	31,288	23,247
Write-off of Fully Depreciated Assets	(33,047)	(27,455)
First Industrial, L.P. | Limited Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	2,986
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	(16,509)	(39)
First Industrial, L.P. | General Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	112,347
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock / General Partner Units	$ 16,509	$ 39