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Net Income Per Common Share (Tables)
12 Months Ended
Dec. 31, 2013
Net Income Per Common Share  
Schedule of basic and diluted net income per share

   Basic and diluted net income per share was as follows (in thousands except per share amounts):

 
  For the year ended December 31,  
 
  2013   2012   2011  

Income from continuing operations

  $ 55,405   $ 50,306   $ 48,620  

Less net income allocated to non-controlling interests

        (37 )   (191 )

Less net income allocated to participating securities:

                   

Non-forfeitable dividends on participating securities

    (381 )   (377 )   (342 )

Income allocated to participating securities

    (2 )        
               

Total net income allocated to participating securities

    (383 )   (377 )   (342 )

Less net income allocated to preferred stockholders:

                   

Preferred stock dividends

    (3,273 )   (3,273 )   (5,512 )

Preferred stock redemption charge

            (3,566 )
               

Total net income allocated to preferred stockholders

    (3,273 )   (3,273 )   (9,078 )
               

Income from continuing operations available to common stockholders

    51,749     46,619     39,009  

Discontinued operations:

                   

Income from discontinued operations

    805     1,005     823  

Gain on sale of assets, net

    1,605     16      
               

Total net income from discontinued operations

    2,410     1,021     823  
               

Net income available to common stockholders

    54,159     47,640     39,832  

Effect of dilutive securities:

                   

Convertible preferred securities

             
               

Total effect of dilutive securities

             
               

Net income for diluted net income per share

  $ 54,159   $ 47,640   $ 39,832  
               
               

Shares for basic net income per share

    33,111     30,238     29,194  

Effect of dilutive securities:

                   

Stock options

    31     40     28  

Convertible preferred securities

             
               

Total effect of dilutive securities

    31     40     28  
               

Shares for diluted net income per share

    33,142     30,278     29,222  
               
               

Basic net income per share

  $ 1.64   $ 1.58   $ 1.36  
               
               

Diluted net income per share(1)

  $ 1.63   $ 1.57   $ 1.36  
               
               

(1)
For each year, the Series C Cumulative Convertible Preferred Stock, the participating securities and the convertible non-controlling interests have been excluded from the computation of diluted net income per share as such inclusion would be anti-dilutive.