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Earnings per share
 9 Months Ended
Sep. 29, 2013
Earnings Per Share [Abstract]  
Earnings per share

(3) Earnings per share

Basic and diluted income (loss) per common share attributable to common stockholders have been calculated using the weighted average number of common shares outstanding for the period. Diluted income (loss) per common share attributable to common stockholders is computed by dividing the income (loss) allocated to common stockholders utilizing the two-class method by the weighted average number of fully diluted common shares outstanding. Our redeemable convertible preferred stock are all considered participating securities requiring the two-class method to calculate basic and diluted earnings per share. In periods of a net loss attributable to common stockholders, the redeemable convertible preferred stock are excluded from the computation of basic earnings per share due to the fact that they are not required to fund losses and the redemption amount is not reduced as a result of losses. Dilutive securities do not include stock options awarded to employees that have a performance condition requiring the completion of an initial public offering of common stock (an “IPO”), as that performance condition was not satisfied at the reporting date and the holders of these options had no rights in our undistributed earnings at that time.

 

     13 Weeks Ended     39 Weeks Ended  
     September 29,
2013		     September 23,
2012		     September 29,
2013		     September 23,
2012		  

Calculation of undistributed (loss) for basic and diluted shares:

         

Net income attributable to Potbelly Corporation

    $ 2,165      $ 2,548      $ 4,941      $ 5,571   

Less: Dividend declared to common and preferred stockholders

      (49,854 )      —          (49,854 )      —     

Less: Accretion of redeemable convertible preferred stock to maximum redemption value

      (4,796 )      (5,545 )      (15,097 )      (13,887 ) 
  

 

 

    

 

 

    

 

 

    

 

 

  

Undistributed loss for basic and diluted shares

    $ (52,485 )    $ (2,997 )    $ (60,010 )    $ (8,316 ) 
  

 

 

    

 

 

    

 

 

    

 

 

  

Allocation of undistributed(loss) to participating securities:

         

Common shares

    $ (52,485 )    $ (2,997 )    $ (60,010 )    $ (8,316 ) 

Redeemable convertible preferred shares

      —          —          —          —     
  

 

 

    

 

 

    

 

 

    

 

 

  

Undistributed (loss) income

    $ (52,485 )    $ (2,997 )    $ (60,010 )    $ (8,316 ) 
  

 

 

    

 

 

    

 

 

    

 

 

  

Weighted average common shares outstanding-basic

      4,268,953        3,972,873        4,250,819        3,972,873   

Plus: Effect of potential stock options exercise

      —          —          —          —     

Plus: Effect of potential warrant exercise

      —          —          —          —     
  

 

 

    

 

 

    

 

 

    

 

 

  

Weighted average common shares outstanding-diluted

      4,268,953        3,972,873        4,250,819        3,972,873   
  

 

 

    

 

 

    

 

 

    

 

 

  

Income (loss) per share available to common stockholders-basic

    $ (12.29 )    $ (0.75 )    $ (14.12 )    $ (2.09 ) 

Income (loss) per share available to common stockholders-diluted

    $ (12.29 )    $ (0.75 )    $ (14.12 )    $ (2.09 ) 

Potentially dilutive shares that are considered anti-dilutive:

       

Common share options

      4,744,664        4,446,049        4,744,664        4,446,049   

Warrants

      241,704        378,996        241,704        378,996