Share-based Compensation

6 Months Ended

Jun. 30, 2018

Share-based Compensation [Abstract]

Share-based Compensation

Share-based Compensation

During the six months ended June 30, 2018, we granted 0.20 stock options and 0.10 restricted stock units, 0.02 shares of restricted stock, and 0.02 performance units. The total fair value of awards granted to employees during the six months ended June 30, 2018 was $12.1. In addition, non-employee directors received stock awards with a fair value of $0.4. During the six months ended June 30, 2018, participants in our stock option plans exercised options to purchase 0.06 shares of our common stock, while 0.15 stock options were forfeited.

Stock options generally have a four-year graded vesting period. Restricted stock and restricted stock units generally vest ratably over a three-year period. Performance units generally vest at the end of a three-year performance period based on the attainment of certain pre-determined performance condition targets. During the six months ended June 30, 2018, 0.14 shares of restricted stock and restricted stock units vested while 0.05 restricted stock units and 0.04 performance units were forfeited.

Share-based compensation expense was $0.2 and $1.7 for the three months ended June 30, 2018 and 2017, respectively. Share-based compensation expense was $3.4 and $8.0 for the six months ended June 30, 2018 and 2017, respectively. Share-based compensation expense for the quarter and year includes a $1.8 credit due to forfeitures related to the departure of our former Chief Executive Officer (“CEO”) on June 11, 2018. Share-based compensation expense is included in selling, general, and administrative expenses in the unaudited condensed consolidated statements of operations and comprehensive (loss) income. As of June 30, 2018, total share-based compensation of $8.9 is expected to be recognized over the weighted-average period of approximately 2.5 years.