Share-Based Compensation

3 Months Ended

Mar. 31, 2018

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

Share-Based Compensation

9. Share-Based Compensation

During the three months ended March 31, 2018, the Company did not grant any stock options and cancelled one stock option versus zero grants of stock options and cancellations of 23 stock options during the three months ended March 31, 2017. Substantially all stock options vest at 2% per month for the 50 months beginning with the first day of the eleventh month after date of grant.

Total share-based compensation expense recognized was $0 and $0.2 million during both the three months ended March 31, 2018 and 2017.