Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Equity (Parenthetical)

v3.6.0.2
Consolidated Statements of Equity (Parenthetical) - shares
 1 Months Ended 3 Months Ended 12 Months Ended
Nov. 30, 2014
Dec. 31, 2016
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Balance (in units/ shares)   98,498,651 98,498,651 94,531,512 93,255,284 87,394,512
Conversion of common units to common shares (in shares/units)     87,000 160,160 140,149  
Shares issued to the public (in units/shares) 5,520,000          
Exercise of share options (in units/shares)       76,474 62,888  
Restricted common units/shares redemptions     158,912 149,353 137,735  
Preferred Shares [Member]            
Stock redeemed or called during period (in units/ shares)     (531,667) 0 (2,000,000)  
Common Shares [Member]            
Shares issued to the public (in units/shares)       0 5,520,000  
Common Stock Issued to Public Under At-the-Market Program [Member]            
Shares issued to the public (in units/shares)   3,721,227 3,721,227 890,241 0