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Stock-Based Compensation (Tables)
3 Months Ended
Jun. 30, 2013
Stock Option Activity under All Plans and Other Grants

The following table summarizes stock option activity under all Plans and other grants authorized by the Board of Directors.

 

     Number
of Shares
    Aggregate
Intrinsic
Value
     Approximate
Remaining
Contractual
Term
(Years)
     Weighted-
Average
Exercise
Price
 

Outstanding at March 31, 2013

     1,231,498     $ 720         7       $ 8.20   

Granted

     158,000       —           10         8.58   

Exercised

     (49,167     91         —           6.80   

Canceled or expired

     (108,667 )     —           —           9.08   
  

 

 

         

Outstanding at June 30, 2013

     1,231,664       1,093         8         8.22   
  

 

 

         

Options exercisable at June 30, 2013

     602,997        764         6         8.17   

Unvested options expected to become exercisable after June 30, 2013

     628,667       329         9         8.28   

Shares available for future option grants at June 30, 2013 (a)

     428,477          

 

(a) May be decreased by restricted stock grants.
Restricted Stock Award Activity under All Plans

A summary of restricted stock award activity under all Plans follows.

 

     Number
of Shares
     Weighted –
Average
Grant Date

Fair Value
 

Non-vested at March 31, 2013

     24,125      $ 7.51   

Granted

     11,714         8.35   

Vested

     —           —     

Cancelled

     —           —     
  

 

 

    

Non-vested at June 30, 2013

     35,839        7.78   
  

 

 

    
Black Scholes Based Option Pricing Model [Member]
 
Assumptions to Estimate Fair Value of Option Grants

The Company used the following assumptions to estimate the fair value of option grants under the Black-Scholes method:

 

     Dividend
yield
    Volatility     Risk-free
interest rate
    Expected
term of
options (in
years)
     Forfeiture
adjustment
 

2014 $3.03 value per option

     0.0     31.2     1.3     7.0         0.0

2014 $3.01 value per option

     0.0     31.2     1.3     7.0         0.0

2013 $3.05 value per option

     0.0     34.0     1.2     7.0         0.0

2013 $3.02 value per option

     0.0     35.5     1.2     7.0         0.0

2013 $3.02 value per option

     0.0     34.9     1.1     7.0         0.0

2013 $2.82 value per option

     0.0     30.9     1.3     7.0         0.0
Monte Carlo Simulation [Member]
 
Assumptions to Estimate Fair Value of Option Grants

The Company used the following assumptions to estimate the fair value of option grants under the Monte Carlo simulation:

 

     2014
$2.13
value
per
option
    2014
$1.92
value
per
option
    2013
$1.86
value
per
option
    2013
$1.75
value
per
option
    2013
$1.75
value
per
option
 

Dividend yield

     0.0     0.0     0.0     0.0     0.0

Volatility

     34.9     34.9     34.0     34.9     30.1

Risk-free interest rate

     1.9     1.9     1.8     1.1     1.3

Expected term of options (in years)

     10.0        10.0        10.0        10.0        10.0   

Forfeiture adjustment

     0.2     0.3     0.2     0.2     0.2

Suboptimal behavior factor

     1.9        1.9        1.9        1.9        1.9