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CONVERTIBLE PREFERRED STOCK: (Details) (USD $)
12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
CONVERTIBLE PREFERRED STOCK:    
Number of series of convertible preferred stock outstanding 2  
Series A preferred stock
   
Convertible preferred stock    
Par value (gross proceeds): $ 2,500,000  
Number of shares outstanding at September 2014: 100,000 100,000
Liquidation preference per share: $ 25.00  
Conversion price per share: $ 30.31  
Number of common shares to be issued upon conversion: 82,481  
Dividend rate: (as a percent) 6.785%  
Numerator of the multiplier used to calculate number of common shares in which the preferred stock are convertible 25.00  
Redemption price as a percentage of liquidation preference 112.00%  
Annual percentage decrease in redemption price until the redemption price equals the liquidation preference 1.00%  
Series B preferred stock
   
Convertible preferred stock    
Par value (gross proceeds): 400,000  
Number of shares outstanding at September 2014: 16,000 16,000
Liquidation preference per share: $ 25.00  
Conversion price per share: $ 24.65  
Number of common shares to be issued upon conversion: 16,227  
Dividend rate: (as a percent) 6.37%  
Numerator of the multiplier used to calculate number of common shares in which the preferred stock are convertible $ 25.00  
Redemption price as a percentage of liquidation preference 112.00%  
Annual percentage decrease in redemption price until the redemption price equals the liquidation preference 1.00%  
Closely held shares of Series B Preferred Stock 8,000  
Number of directors who can be elected by an institutional investor, pursuant to the voting rights in the certificate of designation 1  
Series B preferred stock | Private transaction, one
   
Convertible preferred stock    
Shares repurchased 34,078  
Series B preferred stock | Chief Executive Officer
   
Convertible preferred stock    
Closely held shares of Series B Preferred Stock 8,000