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STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)
Total
USD ($)
Series I Class B
Series II Class B
Series IV Class B
Series V Class B
Preferred Stock
Series I Class B
USD ($)
Preferred Stock
Series II Class B
USD ($)
Preferred Stock
Series III Class B
USD ($)
Preferred Stock
Series IV Class B
USD ($)
Preferred Stock
Series V Class B
USD ($)
Common Stock
Additional Paid-in Capital
USD ($)
Retained Deficit
USD ($)
Treasury Stock
USD ($)
Balance at Dec. 31, 2009 $ 35,920,473         $ 144,000 $ 219,700 $ 130,245 $ 552,500 $ 1,238,821   $ 57,089,153 $ (23,453,946)  
Balance (in shares) at Dec. 31, 2009           144,000 219,700 130,245 552,500 1,238,821 23,825,149      
Increase (Decrease) in Stockholders' Equity                            
Conversion of Preferred Stock into Common Stock                   (6,250)   6,250    
Conversion of Preferred Stock into Common Stock (in shares)                   (6,250) 6,250      
Recognition of stock option compensation 1,340,300                     1,340,300    
Recognition of stock option exercise 115,600                     115,600    
Recognition of stock option exercise (in shares)                     142,715      
Payment of dividends (876,566)                     (876,566)    
Net income (loss) 2,400,694                       2,400,694  
Balance at Dec. 31, 2010 38,900,501         144,000 219,700 130,245 552,500 1,232,571   57,674,737 (21,053,252)  
Balance (in shares) at Dec. 31, 2010           144,000 219,700 130,245 552,500 1,232,571 23,974,114      
Increase (Decrease) in Stockholders' Equity                            
Exchange of Preferred Stock for Common Stock           (40,500) (41,000)   (10,000) (1,185,964)   1,277,464    
Exchange of Preferred Stock for Common Stock (in shares)           (40,500) (41,000)   (10,000) (1,185,964) 1,277,464      
Purchase of Preferred Stock (1,357,275)                     (1,357,275)    
Recognition of stock option exercise 54,369                     54,369    
Recognition of stock option exercise (in shares)                     67,122      
Payment of dividends (364,625)                     (364,625)    
Net income (loss) 1,418,482                       1,418,482  
Balance at Dec. 31, 2011 38,651,452         103,500 178,700 130,245 542,500 46,607   57,284,670 (19,634,770)  
Balance (in shares) at Dec. 31, 2011           103,500 178,700 130,245 542,500 46,607 25,318,700      
Increase (Decrease) in Stockholders' Equity                            
Exchange of Preferred Stock for Common Stock (in shares) 1,277,464 40,500 41,000 10,000 1,185,964                  
Recognition of stock option exercise 1,620,701                     1,620,701    
Recognition of stock option exercise (in shares)                     2,000,865      
Payment of dividends (230,450)                     (230,450)    
Declaration of dividends (57,613)                     (57,613)    
Repurchase of Common Stock (122,202)                         (122,202)
Repurchase of Common Stock (in shares) 67,102                   (67,102)      
Net income (loss) (4,132,892)                       (4,132,892)  
Balance at Dec. 31, 2012 $ 35,728,996         $ 103,500 $ 178,700 $ 130,245 $ 542,500 $ 46,607   $ 58,617,308 $ (23,767,662) $ (122,202)
Balance (in shares) at Dec. 31, 2012           103,500 178,700 130,245 542,500 46,607 27,252,463