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STOCK-BASED COMPENSATION

6 Months Ended

Jun. 30, 2013

Share-Based Compensation [Abstract]

Compensation and Employee Benefit Plans [Text Block]

8. 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 $7,940 and $9,362 during the three-month periods ended June 30, 2013 and 2012, respectively, and $16,321 and $18,017 during the six-month periods ended June 30, 2013 and 2012, respectively.

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- Definition

The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans.

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