CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 23,491	$ 16,295
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation	23,200	25,829
Amortization of Deferred Financing Costs	778	873
Other Amortization, including Stock Based Compensation	8,112	8,104
Provision for Bad Debt	75	265
Gain on Sale of Real Estate	(8,009)	(7,251)
Loss from Retirement of Debt	1,653	0
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net	(4,147)	(2,453)
Increase in Deferred Rent Receivable, Net	(1,494)	(1,839)
Decrease in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits	(3,571)	(12,460)
Payments of Prepayment Penalties and Discounts Associated with Retirement of Debt	(1,453)	(554)
Net Cash Provided by Operating Activities	38,635	26,809
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate	(15,074)	(47,406)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs	(34,910)	(35,905)
Net Proceeds from Sales of Investments in Real Estate	19,916	15,393
Decrease in Escrows	2,399	19,477
Net Cash Used in Investing Activities	(27,669)	(48,441)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing Costs	(13)	(236)
Repurchase and Retirement of Restricted Stock/Units	(2,401)	(5,230)
Common Stock Dividends and Unit Distributions Paid	(23,017)	(14,705)
Repayments on Mortgage Loans Payable	(38,896)	(60,879)
Repayments of Senior Unsecured Notes	0	(159,125)
Proceeds from Unsecured Credit Facility	85,000	298,000
Repayments on Unsecured Credit Facility	(22,500)	(37,000)
Net Cash (Used in) Provided by Financing Activities	(1,827)	20,825
Net Increase (Decrease) in Cash and Cash Equivalents	9,139	(807)
Cash and Cash Equivalents, Beginning of Year	9,859	3,987
Cash and Cash Equivalents, End of Period	18,998	3,180
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Expense Capitalized in Connection with Development Activity	1,027	449
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable	25,977
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	5,082
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate	22,186	16,151
Write-off of Fully Depreciated Assets	(7,023)	(14,457)
Noncontrolling Interest
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	782
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock/General Partner Units	0	(98)
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	98
Common Stock
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable	25,977	22,112
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock/General Partner Units		98
First Industrial, L.P.
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	23,491	16,295
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation	23,200	25,829
Amortization of Deferred Financing Costs	778	873
Other Amortization, including Stock Based Compensation	8,112	8,104
Provision for Bad Debt	75	265
Gain on Sale of Real Estate	(8,009)	(7,251)
Loss from Retirement of Debt	1,653	0
Increase in Tenant Accounts Receivable, Prepaid Expenses and Other Assets, Net	(4,137)	(2,423)
Increase in Deferred Rent Receivable, Net	(1,494)	(1,839)
Decrease in Accounts Payable, Accrued Expenses, Other Liabilities, Rents Received in Advance and Security Deposits	(3,571)	(12,460)
Payments of Prepayment Penalties and Discounts Associated with Retirement of Debt	(1,453)	(554)
Net Cash Provided by Operating Activities	38,645	26,839
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of Real Estate	(15,074)	(47,406)
Additions to Investment in Real Estate and Non-Acquisition Tenant Improvements and Lease Costs	(34,910)	(35,905)
Net Proceeds from Sales of Investments in Real Estate	19,916	15,393
Decrease in Escrows	2,399	19,477
Net Cash Used in Investing Activities	(27,669)	(48,441)
CASH FLOWS FROM FINANCING ACTIVITIES:
Financing Costs	(13)	(236)
Repurchase and Retirement of Restricted Stock/Units	(2,401)	(5,230)
Common Stock Dividends and Unit Distributions Paid	(23,017)	(14,705)
Contributions from Noncontrolling Interests	7	3
Distributions to Noncontrolling Interests	(17)	(33)
Repayments on Mortgage Loans Payable	(38,896)	(60,879)
Repayments of Senior Unsecured Notes	0	(159,125)
Proceeds from Unsecured Credit Facility	85,000	298,000
Repayments on Unsecured Credit Facility	(22,500)	(37,000)
Net Cash (Used in) Provided by Financing Activities	(1,837)	20,795
Net Increase (Decrease) in Cash and Cash Equivalents	9,139	(807)
Cash and Cash Equivalents, Beginning of Year	9,859	3,987
Cash and Cash Equivalents, End of Period	18,998	3,180
SUPPLEMENTAL INFORMATION TO STATEMENTS OF CASH FLOWS:
Interest Expense Capitalized in Connection with Development Activity	1,027	449
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable	25,977
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	5,082
Accounts Payable Related to Construction in Progress and Additions to Investment in Real Estate	22,186	16,151
Write-off of Fully Depreciated Assets	(7,023)	(14,457)
First Industrial, L.P. | Limited Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	782
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock/General Partner Units	0	(98)
First Industrial, L.P. | General Partner Units
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	22,682
Exchange of Limited Partnership Units for Common Stock/General Partnership Units:
Conversion of Limited Partner Units to Common Stock/General Partner Units	0	98
First Industrial, L.P. | Common Stock
Supplemental Schedule of Non-Cash Investing and Financing Activities:
Dividends and Distributions Payable	$ 25,977	$ 22,112