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Stock-Based Compensation (Tables)
6 Months Ended
Jan. 31, 2015
Stock-Based Compensation [Abstract]  
Stock options activity
The following table provides information about stock-based awards outstanding at January 31, 2015:
 
  
 
Shares
  
Weighted Average
Exercise Price
  
Weighted Average
 Fair Value
 
Options outstanding beginning of period
  
815,162
  
$
4.25
  
$
3.27
 
For the period August 1, 2014 through January 31, 2015
            
Granted
  
340,000
  
$
3.43
  
$
2.51
 
Forfeited
  
--
   
--
   
--
 
Exercised
  
(22,500
)
 
$
1.27
  
$
1.02
 
Options outstanding, end of period
  
1,132,662
  
$
4.06
  
$
3.09
 
Options exercisable, end of period
  
667,351
  
$
4.21
  
$
3.25
 
Assumptions used to derive weighted fair value of options granted
The fair value of all options granted during the second quarter of fiscal 2015 was determined at the date of the grant using the Black-Scholes option-pricing model and the following assumptions:

Expected average risk-free interest rate
 
2.10 to 2.19%
 
Expected average life (in years)
 
10
 
Expected volatility
 
65.7%
 
Expected dividend yield
 
0.0%
 
Information about restricted stock grants
The following table provides information about restricted stock grants during the six month period ended January 31, 2015:

  
 
Number of Shares
  
Weighted Average Grant
 Date Fair Value
 
Balance as of July 31, 2014
  
275,547
  
$
3.42
 
Granted
  
207,000
  
$
3.43
 
Forfeited
  
(2,834
)
 
$
4.74
 
Vested
  
(154,003
)
 
$
2.52
 
Relinquished for taxes
  
(27,014
)
 
$
2.52
 
Balance as of January 31, 2015
  
298,696
  
$
3.96