|6 Months Ended|
Jun. 30, 2018
10. SHARE-BASED COMPENSATION
Our eligible employees currently participate in the 2015 LTIP. The 2015 LTIP authorizes the Board to grant stock options, stock appreciation rights, restricted shares, restricted share units, performance awards, and dividend equivalents. All grants are made by issuing new shares and no more than 4.0 million shares of common stock may be issued under the 2015 LTIP. As of June 30, 2018, we had 2.6 million shares available under the 2015 LTIP.
Share-based compensation expense is included in selling, general, and administrative expense. The income tax effect associated with vesting of awards is included in income tax expense. The following table presents the amounts recognized in our Condensed Consolidated Statements of Operations, in thousands:
The following table presents a summary of our share-based compensation activity for the six months ended June 30, 2018, in thousands, except per share amounts:
We had unrecognized share-based compensation expense relating to unvested awards as shown in the following table, dollars in thousands:
Our RSAs with performance-based conditions are evaluated on a quarterly basis with adjustments to compensation expense based on the likelihood of the performance target being achieved or exceeded. The following table shows the range of payouts and the related expense for our outstanding RSAs with performance-based conditions, in thousands:
The fair value of our RSAs with a market-based condition granted under the 2015 LTIP was determined using a Monte Carlo simulation. The following are key inputs in the Monte Carlo analysis for awards granted in 2018 and 2017:
The fair values of stock options granted under the 2015 LTIP were calculated using the Black-Scholes Options Pricing Model. The following table presents the assumptions used to estimate the fair values of options granted in 2018 and 2017:
The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.
Reference 1: http://www.xbrl.org/2003/role/presentationRef