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Share-Based Compensation
3 Months Ended
Mar. 31, 2014
Share-Based Compensation

8. Share-Based Compensation

During the three months ended March 31, 2014, the Company issued 710,196 shares of common stock as a result of the vesting of restricted stock awards. During the three months ended March 31, 2014, the Company granted employees a total of  3,670,735 shares of restricted stock and options to purchase a total of 2,023,914 shares of common stock, with vesting periods from 24 months to 36 months.