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
Mar. 31, 2017
Mar. 31, 2016
Numerator    
Net income $ 7,181 $ 4,802
Net income attributable to noncontrolling interests (6,626) (2,592)
Net income attributable to National Storage Affiliates Trust 555 2,210
Distributed and undistributed earnings allocated to participating securities (6) (4)
Net income attributable to common shareholders - basic 549 2,206
Effect of assumed conversion of dilutive securities 0 2,571
Net income attributable to common shareholders - diluted $ 549 $ 4,777
Denominator    
Weighted average shares outstanding - basic (in shares) 43,401 23,005
Effect of dilutive securities:    
Weighted average shares outstanding - diluted (in shares) 43,401 67,994
Earnings (loss) per share - basic (in dollars per share) $ 0.01 $ 0.10
Earnings (loss) per share - diluted (in dollars per share) $ 0.01 $ 0.07
OP units [Member] | NSA OP, LP [Member]    
Effect of dilutive securities:    
Effect of dilutive securities (in shares) 0 22,235
OP units [Member] | DownREIT Partnership [Member]    
Effect of dilutive securities:    
Effect of dilutive securities (in shares) 0 1,835
LTIP units [Member] | NSA OP, LP [Member]    
Effect of dilutive securities:    
Effect of dilutive securities (in shares) 0 2,151
Subordinated performance units [Member] | NSA OP, LP And DownREIT Partnership [Member]    
Effect of dilutive securities:    
Effect of dilutive securities (in shares) 0 18,768