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Consolidated Statements of Equity (Parenthetical) - shares
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Statement of Stockholders' Equity [Abstract]      
Issuance of common stock and restricted common stock (shares) 727,812 348,809 335,417
Cancellation of restricted common stock (shares) 75,470 52,676 33,720
Conversion of Operating Partnership common units into common stock (shares) 915,338