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XML - IDEA: XBRL DOCUMENT - GENCOR INDUSTRIES INCR36.htm
EXCEL - IDEA: XBRL DOCUMENT - GENCOR INDUSTRIES INCFinancial_Report.xls
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10-K - FORM 10-K - GENCOR INDUSTRIES INCd402869d10k.htm
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XML - IDEA: XBRL DOCUMENT - GENCOR INDUSTRIES INCR47.htm
EX-32.1 - CERTIFICATION - GENCOR INDUSTRIES INCd402869dex321.htm
EX-21.1 - SUBSIDIARIES - GENCOR INDUSTRIES INCd402869dex211.htm
EX-31.1 - CERTIFICATION - GENCOR INDUSTRIES INCd402869dex311.htm
EX-23.1 - CONSENT - GENCOR INDUSTRIES INCd402869dex231.htm
EX-31.2 - CERTIFICATION - GENCOR INDUSTRIES INCd402869dex312.htm
v2.4.0.6
Stock Based Compensation (Tables)
12 Months Ended
Sep. 30, 2012
Option 2009 Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Option activity under the Stock Based Compensation Plan
                 
    Number
of Shares
    Average
Exercise
Price Per
Share
 

Options granted – July 1, 2011

    298,000     $ 7.689  
   

 

 

         

Options outstanding at September 30, 2011

    298,000     $ 7.689  

Options granted – May 28, 2012

    20,000     $ 7.150  
   

 

 

         

Options outstanding at September 30, 2012

    318,000     $ 7.655  
   

 

 

         
Option 1997 Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Option activity under the Stock Based Compensation Plan
                 
    Number
of
Shares
    Exercise
Price Per
Share
 

Outstanding at September 30, 2012 and 2011

    27,500     $ 9.32  
Stock Option 1 [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Fair value of the stock options at time of grant
     

Risk-free interest rate

  2.0%

Expected life of options

  10.0 years

Dividend yield

  0.0%

Volatility

  34.2%
Stock Option 2 [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Fair value of the stock options at time of grant
     

Risk-free interest rate

  2.0%

Expected life of options

  9.4 years

Dividend yield

  0.0%

Volatility

  32.7%