Stock Plans (Tables) |
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Jun. 30, 2018 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Schedule of weighted average grant date fair value and compensation expense related to share-based awards | During the six months ended June 30, 2018 and 2017, shares granted to eligible employees and the grant date fair value per share related to PSU awards were as follows:
(a) The grant date fair value of the PSU market based awards subject to the TSR performance factor was determined by using the Monte Carlo simulation model. (b) The grant date fair value of the PSU awards subject to the other performance factors was determined by using the average of the high and low market price of PMI’s stock at the date of grant. Compensation expense related to PSU awards was as follows:
During the six months ended June 30, 2018 and 2017, shares granted to eligible employees and the weighted-average grant date fair value per share related to RSU awards were as follows:
Compensation expense related to RSU awards was as follows:
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