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Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2013
Stockholders' Equity Note [Abstract]  
Schedule of treasury stock
   
Total Number of
   
Average
   
Shares Purchased
   
Shares Remaining
 
   
Shares Purchased
   
Price Paid
   
Under Repurchase Plan
   
Under Repurchase Plan
 
Month
                       
                         
May 2011
    23,500     $ 0.4095       23,500       976,500
August 2011
    9000     $ 0.1007       9,000       967,500
November 2011
    5500     $ 0.0964       5,500       962,000
                                 
Weighted-average price paid per share
    38,000     $ 0.2910       38,000