Summary of Significant Accounting Policies - Summary of New Accounting Pronouncements (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
New Accounting Pronouncement, Early Adoption [Line Items]
Total Assets	$ 2,718,051	$ 2,581,995
Total Liabilities	1,602,916	1,491,168
First Industrial L.P.
New Accounting Pronouncement, Early Adoption [Line Items]
Total Assets	2,728,766	2,592,708
Total Liabilities	1,602,916	1,491,118
Noncontrolling Interest	$ 1,096	1,080
Previously Reported | First Industrial L.P.
New Accounting Pronouncement, Early Adoption [Line Items]
Total Assets		2,514,246
Total Liabilities		1,413,736
Noncontrolling Interest		0
Restatement Adjustment | First Industrial L.P.
New Accounting Pronouncement, Early Adoption [Line Items]
Total Assets		78,462
Total Liabilities		77,382
Noncontrolling Interest		$ 1,080