Share-based Compensation (Notes)

9 Months Ended

Sep. 30, 2016

Share-based Compensation [Abstract]

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

Share-based Compensation

During the nine months ended September 30, 2016, the Company granted 561 stock options, 283 restricted stock units and 58 performance units, while non-employee directors received 23 stock awards with a fair value of $487. During the nine months ended September 30, 2016, participants in the Company’s stock option plans exercised options to purchase 1 shares of the Company’s common stock, while 44 stock options were forfeited and 37 stock options expired.

Stock options generally vest ratably over a four-year vesting period. Restricted stock and restricted stock units generally vest ratably over a three-year period, and performance units and leveraged restricted share units generally vest at the end of a three-year performance period based on the achievement of certain performance conditions. During the nine months ended September 30, 2016, 75 restricted stock and restricted stock units vested while 22 shares of restricted stock and restricted stock units were forfeited. Also, during the nine months ended September 30, 2016, 39 performance units vested while 6 performance units were forfeited. Additionally, during the nine months ended September 30, 2016, 14 leveraged restricted share units vested.

Share-based compensation expense was $1,826 and $1,417 for the three months ended September 30, 2016 and 2015, respectively. Share-based compensation expense was $9,014 and $9,203 for the nine months ended September 30, 2016 and 2015, respectively. Share-based compensation expense is included in selling, general and administrative expenses in the condensed consolidated statements of operations and comprehensive income (loss). As of September 30, 2016, total share-based compensation of $7,626 is expected to be recognized over the weighted-average period of approximately 2.0 years.