Share-Based Compensation

9 Months Ended

Sep. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Share-Based Compensation

Share-Based Compensation

The Company recorded approximately $7.7 million and $24.0 million of share-based compensation expense for the three and nine months ended September 30, 2015, respectively, and approximately $8.4 million and $24.7 million for the three and nine months ended September 30, 2014, respectively. As of September 30, 2015, there was approximately $32.2 million of total unrecognized compensation costs related to non-vested share-based employee compensation arrangements granted under the Company's equity compensation plans. The Company expects to recognize those costs over a weighted average period of 1.43 years.

During the nine months ended September 30, 2015, the Company issued a total of 2,953,389 shares of its common stock upon the exercise of stock options, pursuant to restricted stock grants and pursuant to purchases under the Company's 2010 employee stock purchase plan (ESPP). During the nine months ended September 30, 2014, the Company issued a total of 948,773 shares of its common stock upon the exercise of stock options, pursuant to restricted stock grants and pursuant to purchases under the ESPP. Cash received from the exercise of stock options and purchases through the ESPP during the nine months ended September 30, 2015 and September 30, 2014 was $59.8 million and $13.7 million, respectively, and is included within the financing activities section of the accompanying consolidated statements of cash flows.