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10. Stock-based Compensation (Tables)
12 Months Ended
Sep. 30, 2016
Share-based Compensation [Abstract]  
Stock option activity
       Weighted   Weighted     
       Average   Average     
   Number of   Exercise   Remaining     
  Shares   Price   Contractual Life   Intrinsic Value 
Outstanding at September 30, 2015   175,000   $11.22    4.76   $225,750 
Granted                   
Exercised                   
Forfeited                   
Outstanding at September, 30 2016   175,000   $11.22    3.75   $346,500 
Exercisable at September 30, 2016   168,750   $10.68    3.55   $346,500 
Stock option exercise price
Outstanding   Exercisable 
Number of
Options
   Exercise
Price
   Number of
Options
   Exercise
Price
 
 31,250   $4.98    31,250   $4.98 
 25,000    7.50    25,000    7.50 
 31,250    10.02    31,250    10.02 
 6,250    12.48    6,250    12.48 
 6,250    15.00        15.00 
 75,000    15.18    75,000    15.18 
 175,000         168,750      
Non-vested share activity
       Weighted-Average 
   Number of   Grant-Date 
Non-vested Shares  Shares   Fair Value 
Non-vested at September 30, 2015   62,500   $8.64 
Granted         
Vested   (56,250)     
Non-vested at September 30, 2016   6,250   $8.64 
Assumptions used
Risk-free interest rate   1.01%
Expected life of the options   2.5 to 3.5 years
Expected volatility   140%
Expected dividend yield   0%