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EQUITY (Tables)
 12 Months Ended
Dec. 31, 2016
Equity [Abstract]  
Schedule of Common Stock Activity
Changes in common stock during the years ended December 31, 2016 and 2015 were as follows:

 
 
2016
 
2015
Beginning common shares outstanding
 
86,793,521

 
86,149,720

Common stock issued
 
6,151,514

 
—

Grants under the Equity Plan
 
446,686

 
320,845

Common Unit redemptions
 
119,308

 
268,947

Exercise of stock options
 
37,684

 
99,738

Annual grants to independent directors
 
32,180

 
30,440

Common stock issued for director fees
 
7,618

 
6,246

Forfeitures
 
(1,420
)
 
(46,030
)
Shares retained for employee tax withholding requirements
 
(61,622
)
 
(36,385
)
Ending common shares outstanding
 
93,525,469

 
86,793,521