Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Equity (Parenthetical)

v3.8.0.1
Consolidated Statements of Equity (Parenthetical) - shares
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Balance (in units/ shares) 102,150,358 99,390,234 101,292,299 98,498,651
Conversion of common units to common shares (in units/shares) 53,817 185,000    
Share-based compensation issuance, net of redemptions (in units/shares) 127,242 159,801    
Forward Equity Sale Agreement        
Common shares issued during the period (in shares) 677,000      
Common Shares | Common Stock Issued to Public Under At-the-Market Program        
Common shares issued during the period (in shares)   546,782