Stock-Based Compensation	6 Months Ended
Jun. 30, 2015
Stock-Based Compensation	Stock-Based Compensation During the six months ended June 30, 2015, 0.7 million performance-based restricted stock units and 0.3 million performance-based options were awarded to certain officers and key employees under the Company's Second Amended and Restated 2005 Omnibus Long-Term Incentive Plan. The awards have vesting conditions tied to the achievement of certain combined annual operating income targets for 2015 and 2016. Upon the achievement of the targets, one third of the restricted stock units will vest each in February 2017, February 2018 and February 2019. If certain lower levels of combined annual operating income for 2015 and 2016 are achieved, fewer or no restricted stock units will vest and the remaining restricted stock units will be forfeited. The Company deemed the achievement of certain operating income targets for 2015 and 2016 probable during the three months ended March 31, 2015. The Company assesses the probability of the achievement of the remaining operating income targets at the end of each reporting period. If it becomes probable that any remaining performance targets related to these performance-based restricted stock units will be achieved, a cumulative adjustment will be recorded as if ratable stock-based compensation expense had been recorded since the grant date. Additional stock based compensation of up to $4.2 million would have been recorded during the six months ended June 30, 2015, for these performance-based restricted stock units and options had the achievement of the remaining operating income targets been deemed probable. During 2014, the Company granted performance-based restricted stock units with vesting conditions tied to the achievement of certain combined annual operating income targets for 2014 and 2015. During the three months ended September 30, 2014, the Company deemed the achievement of certain operating income targets for 2014 and 2015 probable and recorded a cumulative adjustment of $3.8 million. Additional stock based compensation of up to $4.3 million would have been recorded during the six months ended June 30, 2015, for these performance-based restricted stock units had the achievement of the remaining operating income targets been deemed probable. During 2012 and 2013, the Company granted performance-based restricted stock units with vesting conditions tied to the achievement of certain combined annual operating income targets for 2013 and 2014. During the three months ended March 31, 2014, the Company deemed the achievement of the remaining operating income targets for 2013 and 2014 probable and recorded a cumulative adjustment of $6.6 million. The Company issued approximately 289.7 thousand options to purchase shares of the Company’s Class A common stock in connection with the acquisition of MFP, which are conditioned upon continuous employment. These shares have been excluded from purchase consideration and will be recognized over the requisite service period as stock-based compensation.

Stock-Based Compensation

During the six months ended June 30, 2015, 0.7 million performance-based restricted stock units and 0.3 million performance-based options were awarded to certain officers and key employees under the Company's Second Amended and Restated 2005 Omnibus Long-Term Incentive Plan. The awards have vesting conditions tied to the achievement of certain combined annual operating income targets for 2015 and 2016. Upon the achievement of the targets, one third of the restricted stock units will vest each in February 2017, February 2018 and February 2019. If certain lower levels of combined annual operating income for 2015 and 2016 are achieved, fewer or no restricted stock units will vest and the remaining restricted stock units will be forfeited. The Company deemed the achievement of certain operating income targets for 2015 and 2016 probable during the three months ended March 31, 2015. The Company assesses the probability of the achievement of the remaining operating income targets at the end of each reporting period. If it becomes probable that any remaining performance targets related to these performance-based restricted stock units will be achieved, a cumulative adjustment will be recorded as if ratable stock-based compensation expense had been recorded since the grant date. Additional stock based compensation of up to $4.2 million would have been recorded during the six months ended June 30, 2015, for these performance-based restricted stock units and options had the achievement of the remaining operating income targets been deemed probable.

During 2014, the Company granted performance-based restricted stock units with vesting conditions tied to the achievement of certain combined annual operating income targets for 2014 and 2015. During the three months ended September 30, 2014, the Company deemed the achievement of certain operating income targets for 2014 and 2015 probable and recorded a cumulative adjustment of $3.8 million. Additional stock based compensation of up to $4.3 million would have been recorded during the six months ended June 30, 2015, for these performance-based restricted stock units had the achievement of the remaining operating income targets been deemed probable.

During 2012 and 2013, the Company granted performance-based restricted stock units with vesting conditions tied to the achievement of certain combined annual operating income targets for 2013 and 2014. During the three months ended March 31, 2014, the Company deemed the achievement of the remaining operating income targets for 2013 and 2014 probable and recorded a cumulative adjustment of $6.6 million.

The Company issued approximately 289.7 thousand options to purchase shares of the Company’s Class A common stock in connection with the acquisition of MFP, which are conditioned upon continuous employment. These shares have been excluded from purchase consideration and will be recognized over the requisite service period as stock-based compensation.