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Share-based Compensation (Tables)
6 Months Ended
Jun. 30, 2019
Share-based Payment Arrangement [Abstract]  
Schedule about share-based compensation expense Information on share-based compensation expense is presented below:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
Share-based Compensation Expense
2019
 
2018
 
2019
 
2018
Stock options
$
0.3

 
$
0.3

 
$
2.0

 
$
2.0

Restricted stock
0.3

 
0.5

 
1.8

 
2.4

Restricted stock units issued to Directors
0.3

 
0.3

 
0.6

 
0.6

Performance shares
0.6

 
0.6

 
1.2

 
1.1

Equity-based long-term performance plan
0.3

 
0.1

 
0.5

 
0.2

Total share-based compensation expense
$
1.8

 
$
1.8

 
$
6.1

 
$
6.3