Share-based Compensation (Notes)

6 Months Ended

Jun. 30, 2016

Share-based Compensation [Abstract]

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

Share-based Compensation

During the six months ended June 30, 2016, the Company granted 504 stock options, 261 restricted stock units and 58 performance units, while non-employee directors received 17 stock awards with a fair value of $341. During the six months ended June 30, 2016, participants in the Company’s stock option plans exercised options to purchase 1 shares of the Company’s common stock, while 48 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 six months ended June 30, 2016, 75 restricted stock and restricted stock units vested while 23 shares of restricted stock and restricted stock units were forfeited. Also, during the six months ended June 30, 2016, 39 performance units vested while 6 performance units were forfeited. Additionally, during the six months ended June 30, 2016, 14 leveraged restricted share units vested.

Share-based compensation expense was $1,651 and $2,034 for the three months ended June 30, 2016 and 2015, respectively. Share-based compensation expense was $7,188 and $7,786 for the six months ended June 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 June 30, 2016, total share-based compensation of $7,870 is expected to be recognized over the weighted-average period of approximately 2.2 years.