Annual report pursuant to Section 13 and 15(d)

EQUITY-BASED AWARDS - Performance-Based LTIP Units Activity (Details)

v3.8.0.1
EQUITY-BASED AWARDS - Performance-Based LTIP Units Activity (Details) - Performance-Based LTIP Units [Member]
12 Months Ended
Dec. 31, 2017
$ / shares
shares
Weighted Average Grant-Date Fair Value  
Unvested at beginning of year (in dollars per share) | $ / shares $ 0.00
Granted (in dollars per share) | $ / shares 27.63
Unvested at end of year (in dollars per share) | $ / shares $ 27.63
Minimum [Member]  
Number of LTIP units  
Unvested units at beginning of year (in shares) 0
Granted (in shares) 0
Unvested units at end of year (in shares) 0
Target [Member]  
Number of LTIP units  
Unvested units at beginning of year (in shares) 0
Granted (in shares) 40,390
Unvested units at end of year (in shares) 40,390
Maximum [Member]  
Number of LTIP units  
Unvested units at beginning of year (in shares) 0
Granted (in shares) 90,874
Unvested units at end of year (in shares) 90,874