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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Real Estate Held For Sale Accumulated Depreciation And Amortization | $ 7,054 | $ 0
Common Stock, par value | $ 0.01 | $ 0.01
Common Stock, shares authorized | 225,000,000 | 225,000,000
Common Stock, shares issued | 129,051,412 | 126,994,478
Common Stock, shares outstanding | 129,051,412 | 126,994,478
Net Investment in Real Estate | $ 3,255,240 | $ 3,025,429
Mortgage Loans Payable, Net | $ 143,879 | $ 173,685
First Industrial, L.P. |  |
General Partner Units, units outstanding | 129,051,412 | 126,994,478
Limited Partner Units, units outstanding | 2,713,142 | 2,422,744
Net Investment in Real Estate | $ 3,255,240 | $ 3,025,429
Mortgage Loans Payable, Net | 143,879 | 173,685
Other Real Estate Partnerships |  |
Real Estate Held For Sale Accumulated Depreciation And Amortization | 7,054 | 0
Net Investment in Real Estate | 245,396 | 240,847
Mortgage Loans Payable, Net | $ 6,292 | $ 11,009

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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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