7. Share-Based Compensation

The Company has share-based compensation plans, which are more fully described in Note 9, Share-Based Compensation, to the Consolidated Financial Statements in the 2016 10-K. During the six months ended June 30, 2017, the Company granted stock appreciation rights, or SARs, and stock units subject to service conditions and service and performance conditions.

In June 2017, the Company granted stock unit awards to its Chief Executive Officer which will vest on December 31, 2019 subject to his continued employment through that date and the achievement of certain performance conditions. The performance conditions include targets for Volume Points, adjusted earnings before interest and taxes, and adjusted earnings per share. These performance stock unit awards can vest at between 0% and 200% of the target award based on the achievement of the performance conditions.

For the three months ended June 30, 2017 and 2016, share-based compensation expense amounted to $11.4 million and $10.7 million, respectively. For the six months ended June 30, 2017 and 2016, share-based compensation expense amounted to $22.7 million and $20.5 million, respectively. As of June 30, 2017, the total unrecognized compensation cost related to all non-vested stock awards was $64.9 million and the related weighted-average period over which it is expected to be recognized is approximately 1.6 years.

The following tables summarize the activity under all share-based compensation plans for the six months ended June 30, 2017:

The weighted-average grant date fair value of SARs granted during the three months ended June 30, 2017 and 2016 was $34.76 and $29.77, respectively. The weighted-average grant date fair value of SARs granted during the six months ended June 30, 2017 and 2016 was $28.34 and $29.47, respectively. The total intrinsic value of SARs exercised during the three months ended June 30, 2017 and 2016 was $80.2 million and $8.2 million, respectively. The total intrinsic value of SARs exercised during the six months ended June 30, 2017 and 2016 was $97.0 million and $14.1 million, respectively.

The total vesting date fair value of stock units which vested during the three months ended June 30, 2017 and 2016 was $1.4 million and $1.8 million, respectively. The total vesting date fair value of stock units which vested during the six months ended June 30, 2017 and 2016 was $1.4 million and $1.8 million, respectively.