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Share-Based Compensation Plan (Tables)
 3 Months Ended
Mar. 31, 2020
Share-based Payment Arrangement [Abstract]  
Summary of Service Condition Restricted Share Activity
The following table provides a summary of service condition restricted share activity as of March 31, 2020:
 
Shares
 
Weighted-Average
Grant Date
Fair Value
Unvested at December 31, 2019
149,179

 
$
33.37

Granted
332,920

 
$
25.53

Vested
(71,990
)
 
$
33.52

Cancelled
(217,083
)
 
$
25.53

Unvested at March 31, 2020
193,026

 
$
28.75
Performance-Based Equity Awards Methodology and Assumptions The grant date fair value of the performance awards, with market conditions, were determined using a Monte Carlo simulation method with the following assumptions:
Performance Award Grant Date
 
Percentage of Total Award
 
Grant Date Fair Value by Component ($ in millions)
 
Volatility
 
Interest Rate
 
Dividend Yield
December 13, 2013
 
 
 
 
 
 
 
 
 
 
 
Relative Total Shareholder Return
 
50.00%
 
$4.7
 
29.00%
 
0.34% - 2.25%
 
2.40%
 
Absolute Total Shareholder Return
 
50.00%
 
$2.9
 
29.00%
 
0.34% - 2.25%
 
2.40%
 
 
 
 
 
 
 
 
 
 
 
 
February 11, 2015
 
 
 
 
 
 
 
 
 
 
 
Relative Total Shareholder Return
 
30.00%
 
$0.9
 
22.00%
 
1.02%
 
2.50%
 
Absolute Total Shareholder Return
 
40.00%
 
$0.7
 
22.00%
 
1.02%
 
2.50%
 
EBITDA Comparison
 
30.00%
 
$0.7
 
22.00%
 
1.02%
 
2.50%
 
 
 
 
 
 
 
 
 
 
 
 
July 27, 2015
 
 
 
 
 
 
 
 
 
 
 
Relative Total Shareholder Return
 
30.00%
 
$—
(1) 
22.00%
 
0.68%
 
2.50%
 
Absolute Total Shareholder Return
 
40.00%
 
$—
(1) 
22.00%
 
0.68%
 
2.50%
 
EBITDA Comparison
 
30.00%
 
$—
(1) 
22.00%
 
0.68%
 
2.50%
 
 
 
 
 
 
 
 
 
 
 
 
February 10, 2016
 
 
 
 
 
 
 
 
 
 
 
Relative Total Shareholder Return
 
70.00%
 
$1.6
 
25.00%
 
0.71%
 
3.00%
 
Absolute Total Shareholder Return
 
15.00%
 
$0.2
 
25.00%
 
0.71%
 
3.00%
 
EBITDA Comparison
 
15.00%
 
$0.4
 
25.00%
 
0.71%
 
3.00%
 
 
 
 
 
 
 
 
 
 
 
 
February 15, 2017
 
 
 
 
 
 
 
 
 
 
 
Relative and Absolute Total Shareholder Return
 
65.00% / 35.00%
 
$2.7
 
28.00%
 
1.27%
 
5.60%
 
 
 
 
 
 
 
 
 
 
 
 
February 14, 2018
 
 
 
 
 
 
 
 
 
 
 
Relative and Absolute Total Shareholder Return
 
65.00% / 35.00%
 
$3.5
 
28.00%
 
2.37%
 
4.70%
 
 
 
 
 
 
 
 
 
 
 
 
February 13, 2019
 
 
 
 
 
 
 
 
 
 
 
Relative and Absolute Total Shareholder Return
 
65.00% / 35.00%
 
$4.5
 
26.00%
 
2.52%
 
4.20%
 
 
 
 
 
 
 
 
 
 
 
 
February 12, 2020
 
 
 
 
 
 
 
 
 
 
 
Relative Total Shareholder Return
 
100%
 
$4.9
 
23.40%
 
1.41%
 
—%

(1)Amounts round to zero.