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12. Stock-Based Compensation (Tables)
9 Months Ended
Jun. 30, 2019
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Stock option activity

The following table summarizes stock option activity for the twelve months ended September 30, 2018 and the nine months ended June 30, 2019:

 

       Weighted   Weighted     
       Average   Average     
   Number of   Exercise   Remaining     
   Shares   Price   Contractual Life   Intrinsic Value 
Outstanding at September 30, 2017   211,668   $13.19    3.47   $454,417 
Granted   20,000    32.24    9.02      
Exercised                   
Forfeited                   
Outstanding at September 30, 2018   231,668   $14.84    3.04   $162,500 
Exercisable at September 30, 2018   190,639   $11.89    2.08   $162,500 
                     
                     
Outstanding at September 30, 2018   231,668   $14.84    3.04   $162,500 
Granted                   
Exercised                   
Forfeited   (31,250)               
Outstanding at June 30, 2019   200,418   $15.88    2.63   $ 
Exercisable at June 30, 2019   169,820   $13.65    1.64   $ 
Stock option exercise price

The exercise price for stock options outstanding and exercisable outstanding at June 30, 2019 is as follows:

 

Outstanding   Exercisable 
Number of   Exercise   Number of   Exercise 
Options   Price   Options   Price 
 25,000    7.50    25,000    7.50 
 31,250    10.00    31,250    10.00 
 4,167    10.86    4,167    10.86 
 4,167    10.86    4,167    10.86 
 4,167    10.86    2,430    10.86 
 4,167    10.86           
 6,250    12.50    6,250    12.50 
 6,250    15.00    6,250    15.00 
 75,000    15.18    75,000    15.18 
 8,000    23.41    8,000    23.41 
 8,000    27.60    8,000    27.60 
 8,000    31.74           
 8,000    36.50           
 8,000    41.98           
 200,418         170,514      
Non-vested share activity

The following table summarizes information about the Company’s non-vested shares outstanding as of June 30, 2019 and September 30, 2018:

 

       Average 
   Number of   Grant-Date 
Non-vested Shares  Shares   Fair Value 
Non-vested at September 30, 2017   36,668   $17.70 
Granted   20,000   $10.14 
Vested   (15,639)  $15.72 
Non-vested at September 30, 2018   41,029   $12.88 
           
Non-vested at September 30, 2018   41,029   $12.88 
Granted      $ 
Vested   (11,125)  $13.88 
Non-vested at June 30, 2019   29,904   $14.14 
Assumptions used

The assumptions used in calculating the fair value of stock options granted in fiscal 2018 use the Black-Scholes option pricing model for options granted were as follows:

 

Risk-free interest rate 1.25%
Expected life of the options 5 and 10 years
Expected volatility 107%
Expected dividend yield 0%