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Net Income Per Share
 12 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Net Income Per Share
(5)           Net Income Per Share
 
In accordance with the provisions of ASC Topic 260 (“Earnings Per Share”) basic net income per share is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period.  Diluted net income per common share includes the dilutive effect of potential restricted stock and stock options exercised and the effects of the potential conversion of preferred shares, calculated using the treasury stock method.  Outstanding stock options, restricted stock, and convertible preferred shares issued by the Company represent the only dilutive effect reflected in diluted weighted average shares outstanding.
 
The following is a reconciliation of the numerators and denominators of the basic and diluted net income per share computations for the periods presented (in thousands, except for per share amounts):
 
   
Year Ended March 31,
  
   
2013
    
2012
    
2011
                   
Net income (numerator):
                  
Net income
   $ 17,165     $ 16,659     $ 20,871  
Shares (denominator)
                        
Weighted average number of common shares outstanding used in basic computation
     19,926       20,613       22,514  
Common shares issuable upon exercise of stock options and vesting of restricted stock
     113       85       119  
Common shares issuable upon conversion of preferred shares
     10       10       10  
Shares used in diluted computation
     20,049       20,708       22,643  
Net income per common share:
                        
Basic
   $ 0.86     $ 0.81     $ 0.93  
Diluted
   $ 0.86     $ 0.80     $ 0.92  
 
At March 31, 2013 and 2012, all restricted stock was included in the diluted net income per common share computation.