Share-Based Awards and Cash-Based Awards (Tables)
|
12 Months Ended |
Dec. 31, 2018 |
|---|
| Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
|
| Summary of Share Activity Related to Restricted Stock Units |
A summary of activity related to RSUs is as follows:
|
|
2018
|
|
|
2017
|
|
|
2016
|
|
|
|
Restricted Stock Units
|
|
|
Weighted Average Grant Date Fair Value Per Share
|
|
|
Restricted Stock Units
|
|
|
Weighted Average Grant Date Fair Value Per Share
|
|
|
Restricted Stock Units
|
|
|
Weighted Average Grant Date Fair Value Per Share
|
|
|
Nonvested, beginning of period
|
|
5,765,251
|
|
|
$
|
2.48
|
|
|
|
6,107,248
|
|
|
$
|
2.73
|
|
|
|
3,474,079
|
|
|
$
|
7.42
|
|
|
Granted
|
|
988,955
|
|
|
|
6.90
|
|
|
|
2,128,879
|
|
|
|
2.76
|
|
|
|
4,213,964
|
|
|
|
2.21
|
|
|
Vested
|
|
(2,261,665
|
)
|
|
|
2.21
|
|
|
|
(2,108,553
|
)
|
|
|
3.45
|
|
|
|
(968,652
|
)
|
|
|
16.69
|
|
|
Forfeited
|
|
(1,136,624
|
)
|
|
|
2.68
|
|
|
|
(362,323
|
)
|
|
|
2.87
|
|
|
|
(612,143
|
)
|
|
|
3.64
|
|
|
Nonvested, end of period
|
|
3,355,917
|
|
|
$
|
3.90
|
|
|
|
5,765,251
|
|
|
$
|
2.48
|
|
|
|
6,107,248
|
|
|
$
|
2.73
|
|
|
| Schedule of Restricted Stock Units Outstanding |
Subject to the satisfaction of service conditions, the RSUs outstanding as of December 31, 2018 are eligible to vest in the year indicated in the table below:
|
|
Restricted Stock Units
|
|
|
2019
|
|
2,429,006
|
|
|
2020
|
|
926,911
|
|
|
Total
|
|
3,355,917
|
|
|
| Schedule of Restricted Stock Activity |
A summary of activity related to Restricted Shares is as follows:
|
|
2018
|
|
|
2017
|
|
|
2016
|
|
|
|
Restricted Shares
|
|
|
Weighted Average Grant Date Fair Value Per Share
|
|
|
Restricted Shares
|
|
|
Weighted Average Grant Date Fair Value Per Share
|
|
|
Restricted Shares
|
|
|
Weighted Average Grant Date Fair Value Per Share
|
|
|
Nonvested, beginning of period
|
|
246,528
|
|
|
$
|
2.27
|
|
|
|
161,296
|
|
|
$
|
3.47
|
|
|
|
78,230
|
|
|
$
|
8.95
|
|
|
Granted
|
|
41,544
|
|
|
|
6.74
|
|
|
|
147,372
|
|
|
|
1.90
|
|
|
|
126,128
|
|
|
|
2.22
|
|
|
Vested
|
|
(106,240
|
)
|
|
|
2.64
|
|
|
|
(62,140
|
)
|
|
|
4.51
|
|
|
|
(43,062
|
)
|
|
|
9.75
|
|
|
Nonvested, end of period
|
|
181,832
|
|
|
$
|
3.08
|
|
|
|
246,528
|
|
|
$
|
2.27
|
|
|
|
161,296
|
|
|
$
|
3.47
|
|
|
| Schedule of Restricted Stock Awards Outstanding |
Subject to the satisfaction of service conditions, the Restricted Shares outstanding as of December 31, 2018 are expected to vest as follows:
|
|
Restricted Shares
|
|
|
2019
|
|
105,012
|
|
|
2020
|
|
62,972
|
|
|
2021
|
|
13,848
|
|
|
Total
|
|
181,832
|
|
|
| Summary of Compensation Expense under Share-Based Payment Arrangements and Related Tax Benefit |
A summary of compensation expense under share-based payment arrangements and the related tax benefit is as follows (in thousands):
|
|
Year Ended December 31,
|
|
|
|
2018
|
|
|
2017
|
|
|
2016
|
|
|
Share-based compensation expense from:
|
|
|
|
|
|
|
|
|
|
|
|
|
Restricted stock units
|
$
|
3,260
|
|
|
$
|
7,785
|
|
|
$
|
10,640
|
|
|
Restricted stock
|
|
280
|
|
|
|
280
|
|
|
|
373
|
|
|
Total
|
$
|
3,540
|
|
|
$
|
8,065
|
|
|
$
|
11,013
|
|
|
Share-based compensation tax benefit:
|
|
|
|
|
|
|
|
|
|
|
|
|
Tax benefit computed at the statutory rate
|
$
|
743
|
|
|
$
|
1,694
|
|
|
$
|
3,855
|
|
|
| Summary of Compensation Expense Related to Share-Based Awards and Cash-Based Awards |
A summary of compensation expense related to share-based awards and cash-based awards is as follows (in thousands):
|
|
Year Ended December 31,
|
|
|
|
2018
|
|
|
2017
|
|
|
2016
|
|
|
Share-based compensation included in:
|
|
|
|
|
|
|
|
|
|
|
|
|
General and administrative
|
$
|
3,540
|
|
|
$
|
8,065
|
|
|
$
|
11,013
|
|
|
Cash-based incentive compensation included in:
|
|
|
|
|
|
|
|
|
|
|
|
|
Lease operating expense
|
|
3,596
|
|
|
|
2,101
|
|
|
|
—
|
|
|
General and administrative
|
|
9,586
|
|
|
|
5,032
|
|
|
|
—
|
|
|
Total charged to operating income
|
$
|
16,722
|
|
|
$
|
15,198
|
|
|
$
|
11,013
|
|
|