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Share-based Compensation (Tables)
9 Months Ended
Sep. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Estimated Grant Date Fair Value of Share Options, Using Black-Scholes Option-Pricing Formula

We estimate the fair value of each stock option on the date of grant using a Black-Scholes option-pricing formula, applying the following assumptions, and amortize the fair value to expense over the option’s vesting period using the straight-line attribution approach for employees and non-employee directors:

 

Expected term (in years)

     4   

Risk-free interest rate

     1.57

Expected volatility

     20.97

Expected dividend yield

     0.00