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STOCK-BASED COMPENSATION
9 Months Ended
Sep. 30, 2012
Share-Based Compensation [Abstract]  
Compensation and Employee Benefit Plans [Text Block]
9. STOCK-BASED COMPENSATION

 

We account for stock-based compensation in accordance with Codification Topic 718, Compensation-Stock Compensation, which generally requires us to recognize non-cash compensation expense for stock-based payments using the fair-value-based method. The fair value of each stock option grant has been estimated on the date of grant using the Black-Scholes option pricing model. Accordingly, we recorded compensation expense pertaining to stock-based compensation of $9,463 and $10,298 during the three-month periods ended September 30, 2012 and 2011, respectively, and $27,480 and $28,034 during the nine-month periods ended September 30, 2012 and 2011, respectively.