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Equity Transactions and Stock Incentive Plans (Tables) | 12 Months Ended
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Dec. 31, 2019
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Stock Option Activity | The following table summarizes the Company’s stock option activity:
|  |  | Weighted- |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Average |  |  |  |  |  |  | Aggregate |
|  | Stock |  |  | Remaining |  |  | Weighted- |  |  | Intrinsic |
|  | Options |  |  | Term |  |  | Average |  |  | Value |
|  | Outstanding |  |  | (in years) |  |  | Exercise Price |  |  | (in thousands) |
Outstanding at January 1, 2019 |  |  | 3,424,755 |  |  |  | 7.4 |  |  | $ | 11.49 |  |  |  |  |
Granted |  |  | — |  |  |  |  |  |  | $ | — |  |  |  |  |
Exercised |  |  | (271,984 | ) |  |  |  |  |  | $ | 10.08 |  |  |  |  |
Cancelled |  |  | (26,250 | ) |  |  |  |  |  | $ | 11.69 |  |  |  |  |
Expired |  |  | — |  |  |  |  |  |  | $ | — |  |  |  |  |
Outstanding at December 31, 2019 |  |  | 3,126,521 |  |  |  | 6.1 |  |  | $ | 11.61 |  |  | $ | 24,991 |
Exercisable at December 31, 2019 |  |  | 2,728,721 |  |  |  | 5.9 |  |  | $ | 11.42 |  |  | $ | 22,496 |
Summary of RSU Activity | The following table summarizes the Company’s RSU activity:
|  | RSUs |
|  |  |  |  |  |  |  |  |  | Total |
|  |  |  |  |  | Weighted- |  |  | Fair Value |
|  |  |  |  |  | Average |  |  | of Shares |
|  |  |  |  |  | Grant Date |  |  | Vested |
|  | Shares |  |  | Fair Value |  |  | (in thousands) |
Outstanding at January 1, 2017 |  |  | 141,296 |  |  | $ | 12.57 |  |  |  |  |
Granted |  |  | — |  |  |  |  |  |  |  |  |
Vested |  |  | (111,660 | ) |  | $ | 12.57 |  |  | $ | 2,556 |
Cancelled |  |  | (29,636 | ) |  | $ | 12.57 |  |  |  |  |
Outstanding at December 31, 2017 |  |  | — |  |  |  |  |  |  |  |  |
Granted |  |  | 241,542 |  |  | $ | 29.09 |  |  |  |  |
Vested |  |  | — |  |  |  |  |  |  | $ | — |
Cancelled |  |  | (9,243 | ) |  | $ | 28.72 |  |  |  |  |
Outstanding at December 31, 2018 |  |  | 232,299 |  |  | $ | 29.10 |  |  |  |  |
Granted |  |  | 564,805 |  |  | $ | 13.88 |  |  |  |  |
Vested |  |  | (103,224 | ) |  | $ | 29.61 |  |  | $ | 1,596 |
Cancelled |  |  | (32,622 | ) |  | $ | 20.77 |  |  |  |  |
Outstanding at December 31, 2019 |  |  | 661,258 |  |  | $ | 16.44 |  |  |  |  |
Summary of PSU Activity | The following table summarizes the Company’s PSU activity:
|  | PSUs |
|  |  |  |  |  |  |  |  |  | Total |
|  |  |  |  |  | Weighted- |  |  | Fair Value |
|  |  |  |  |  | Average |  |  | of Shares |
|  |  |  |  |  | Grant Date |  |  | Vested |
|  | Shares(1) |  |  | Fair Value |  |  | (in thousands) |
Outstanding at January 1, 2017 |  |  | — |  |  |  |  |  |  |  |  |
Granted |  |  | 62,791 |  |  | $ | 27.87 |  |  |  |  |
Vested |  |  | — |  |  |  |  |  |  | $ | — |
Cancelled |  |  | — |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2017 |  |  | 62,791 |  |  | $ | 27.87 |  |  |  |  |
Granted |  |  | 108,957 |  |  | $ | 28.72 |  |  |  |  |
Vested |  |  | — |  |  |  |  |  |  | $ | — |
Cancelled |  |  | — |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2018 |  |  | 171,748 |  |  | $ | 28.41 |  |  |  |  |
Granted |  |  | 204,580 |  |  | $ | 14.13 |  |  |  |  |
Vested |  |  | — |  |  |  |  |  |  | $ | — |
Cancelled |  |  | — |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2019 |  |  | 376,328 |  |  | $ | 20.65 |  |  |  |  |
(1) | The number of shares listed for PSUs granted during 2017 represents the actual number of PSUs granted to each recipient eligible to vest if the Company meets its performance goals for the applicable period. The number of shares listed for PSUs granted after 2017 represents the “target” number of PSUs granted to each recipient eligible to vest if the Company meets its “target” performance goals for the applicable period. The actual number of PSUs eligible to vest with respect to PSUs granted after 2017 will vary depending on whether or not the Company meets or exceeds the applicable threshold, target or maximum performance goals for the PSUs, with 200% of the “target” number of PSUs eligible to vest at “maximum” performance levels.
Summary of Share-based Compensation Costs by Award Type | The following table summarizes share-based compensation costs by award type:
|  | Year Ended December 31, |
(In thousands) |  | 2019 |  |  | 2018 |  |  | 2017 |
Stock options |  | $ | 4,850 |  |  | $ | 5,191 |  |  | $ | 5,135 |
RSUs |  |  | 4,284 |  |  |  | 3,383 |  |  |  | 3,554 |
PSUs |  |  | 911 |  |  |  | 1,067 |  |  |  | 65 |
Total share-based compensation costs |  | $ | 10,045 |  |  | $ | 9,641 |  |  | $ | 8,754 |

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