Quarterly report pursuant to Section 13 or 15(d)

EARNINGS PER SHARE - Basic and Diluted Earnings per Share (Details)

v3.7.0.1
EARNINGS PER SHARE - Basic and Diluted Earnings per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Numerator        
Net income $ 15,576 $ 6,045 $ 22,757 $ 10,847
Net (income) loss attributable to noncontrolling interests (13,209) 1,325 (19,835) (1,267)
Net income attributable to National Storage Affiliates Trust 2,367 7,370 2,922 9,580
Distributed and undistributed earnings allocated to participating securities (7) (5) (13) (9)
Net income attributable to common shareholders - basic 2,360 7,365 2,909 9,571
Effect of assumed conversion of dilutive securities 0 (1,356) 0 1,215
Net income attributable to common shareholders - diluted $ 2,360 $ 6,009 $ 2,909 $ 10,786
Denominator        
Weighted average shares outstanding - basic (in shares) 44,223 23,078 43,814 23,041
Effect of dilutive securities:        
Weighted average shares outstanding - diluted (in shares) 44,223 73,531 43,814 70,763
Earnings (loss) per share - basic (in dollars per share) $ 0.05 $ 0.32 $ 0.07 $ 0.42
Earnings (loss) per share - diluted (in dollars per share) $ 0.05 $ 0.08 $ 0.07 $ 0.15
OP units [Member] | NSA OP, LP [Member]        
Effect of dilutive securities:        
Effect of dilutive securities (in shares) 0 24,733 0 23,484
OP units [Member] | DownREIT Partnership [Member]        
Effect of dilutive securities:        
Effect of dilutive securities (in shares) 0 1,835 0 1,835
LTIP units [Member] | NSA OP, LP [Member]        
Effect of dilutive securities:        
Effect of dilutive securities (in shares) 0 2,164 0 2,158
Subordinated performance units [Member] | NSA OP, LP And DownREIT Partnership [Member]        
Effect of dilutive securities:        
Effect of dilutive securities (in shares) 0 21,721 0 20,245