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Stockholders’ Equity of the Company and Partners' Capital of the Operating Partnership - Common Stock and Units Roll-Forward (Details) - shares | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Class of Stock [Line Items] |  |  |
Common Stock/Units, Outstanding, Beginning Balance | 119,883,180 |  |
Issuance of Restricted Stock/Units Awards | 406,347 |  |
Vesting of LTIP Unit Awards | 469,533 |  |
Limited Partners' Capital Account, Units Retired | (33,333) |  |
Common Stock/Units, Outstanding, Ending Balance | 126,307,431 | 119,883,180 |
Common Stock / Operating Partnership Units |  |  |
Class of Stock [Line Items] |  |  |
Common Stock/Units, Outstanding, Beginning Balance | 119,883,180 | 117,107,746 | 111,027,225
Issuance of Common Stock/Contribution of General Partner Units | 4,800,000 | 2,560,000 | 5,600,000
Issuance of Restricted Stock/Units Awards | 227,059 | 275,793 | 322,833
Vesting of LTIP Unit Awards | 150,772 |  |
Repurchase and Retirement of Restricted Stock/Unit Awards | (104,301) | (91,513) | (108,644)
Conversion of Limited Partner Units | 1,350,721 | 31,154 | 266,332
Limited Partners' Capital Account, Units Retired | 0 |  |
Common Stock/Units, Outstanding, Ending Balance | 126,307,431 | 119,883,180 | 117,107,746
First Industrial, L.P. | Common Stock / Operating Partnership Units |  |  |
Class of Stock [Line Items] |  |  |
Common Stock/Units, Outstanding, Beginning Balance | 123,891,401 | 121,147,121 | 115,332,932
Issuance of Common Stock/Contribution of General Partner Units | 4,800,000 | 2,560,000 | 5,600,000
Issuance of Restricted Stock/Units Awards | 227,059 | 275,793 | 322,833
Vesting of LTIP Unit Awards | 150,772 |  |
Repurchase and Retirement of Restricted Stock/Unit Awards | (104,301) | (91,513) | (108,644)
Conversion of Limited Partner Units | 0 | 0 | 0
Limited Partners' Capital Account, Units Retired | (33,333) |  |
Common Stock/Units, Outstanding, Ending Balance | 128,931,598 | 123,891,401 | 121,147,121

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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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