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Share-based Compensation and Equity (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based Payment Arrangement [Abstract] |
Summary of Share-Based Compensation Expense | Share-based compensation expense was as follows:
For the years ended December 31, | 2021 |  | 2020 |  | 2019
Continuing operations |  |  |  |  |
Stock options, net of estimated forfeitures | $ | 468 |  |  | $ | 1,291 |  |  | $ | 3,101 |
Restricted stock awards | 8,427 |  |  | 8,957 |  |  | 7,224 |
Total continuing operations | $ | 8,895 |  |  | $ | 10,248 |  |  | $ | 10,325 |
Discontinued operations |  |  |  |  |
Share-based compensation expense for discontinued operations | 1,277 |  |  | 3,050 |  |  | 2,669 |
Total continuing and discontinued operations | $ | 10,172 |  |  | $ | 13,298 |  |  | $ | 12,994 |
Summary of Stock Options Activity | The following tables summarize the stock option activity and the assumptions used to record the related share-based compensation expense for the years ended December 31, 2021, 2020 and 2019:
|  | 2021 |  | 2020 |  | 2019
|  | Options | Weighted Average Exercise Price | Aggregate Intrinsic Value |  | Options | Weighted Average Exercise Price | Aggregate Intrinsic Value |  | Options | Weighted Average Exercise Price | Aggregate Intrinsic Value
Outstanding at January 1 |  | 3,428 |  | $ | 17.85 |  | $ | 159 |  |  | 5,388 |  | $ | 18.18 |  | $ | 3,396 |  |  | 9,020 |  | $ | 18.79 |  | $ | 744 |
Granted |  | — |  | — |  |  |  | — |  | — |  |  |  | 698 |  | 14.99 |  |
Exercised |  | (583) |  | 12.25 |  | 883 |  |  | (860) |  | 17.60 |  | 2,353 |  |  | (1,569) |  | 16.95 |  | 794 |
Forfeited or expired |  | (682) |  | 20.14 |  |  |  | (1,100) |  | 19.66 |  |  |  | (2,761) |  | 20.06 |  |
Outstanding at December 31 |  | 2,163 |  | 9.89 |  | 6,098 |  |  | 3,428 |  | 17.85 |  | 159 |  |  | 5,388 |  | 18.18 |  | 3,396 |
Exercisable at December 31 |  | 2,163 |  | 9.89 |  | 6,098 |  |  | 3,292 |  | 17.97 |  | 159 |  |  | 4,846 |  | 18.50 |  | 2,136 |
Vested and expected to vest |  | 2,163 |  | 9.89 |  | 6,098 |  |  | 3,426 |  | 17.85 |  | 159 |  |  | 5,274 |  | 18.20 |  | 3,344 |
Summary of Stock Option Plans, By Exercise Price Range |
| Options Outstanding |  | Options Exercisable |  | Assumption Range*
Exercise Prices | Number of Shares | Weighted Average Remaining Contractual Terms (Years) |  | Number of Shares | Weighted Average Remaining Contractual Terms (Years) |  | Risk-Free Interest Rate | Expected Terms in Years | Expected Volatility
Year Ended December 31, 2021 |  |  |  |  |  |  |
$6.38 - $7.96 | 414 |  | 5.98 |  | 414 |  | 5.98 |  | 2.68% - 3.05% | 5.54 - 5.91 | 38.29% - 57.25%
$8.79 - $10.30 | 1,655 |  | 1.53 |  | 1,655 |  | 1.53 |  | 1.45% -2.34% | 3.20 - 7.12 | 35.20% - 58.84%
$15.27 - $24.33 | 94 |  | 0.44 |  | 94 |  | 0.44 |  | 0.76% -2.35% | 4.16 - 6.52 | 39.38%- 53.80%
Year Ended December 31, 2020 |  |  |  |  |  |  |
$13.97 - $15.55 | 748 |  | 6.84 |  | 625 |  | 6.58 |  | 1.99% - 3.05% | 3.25 - 5.91 | 38.29% - 64.18%
$16.38 - $17.89 | 2,247 |  | 2.72 |  | 2,235 |  | 2.68 |  | 1.38% - 2.34% | 3.20 - 7.12 | 35.20% - 58.84%
$21.00 | 146 |  | 0.70 |  | 146 |  | 0.70 |  | 1.81% | 4.00 | 57.79%
$22.88 - $31.92 | 287 |  | 0.76 |  | 287 |  | 0.76 |  | 0.73% - 2.86% | 4.00 - 6.52 | 39.03% - 53.80%
Year Ended December 31, 2019 |  |  |  |  |  |  |
$13.97 - $15.55 | 944 |  | 7.89 |  | 524 |  | 7.06 |  | 1.81% - 3.05% | 3.25 - 5.91 | 38.29% - 64.18%
$17.00 - $19.56 | 3,597 |  | 3.12 |  | 3,475 |  | 2.95 |  | 1.38% - 2.94% | 2.60 - 10.00 | 35.20% - 58.84%
$21.00 - $21.52 | 330 |  | 1.09 |  | 330 |  | 1.09 |  | 0.68% - 2.61% | 3.79 - 6.55 | 38.16% - 57.79%
$22.32 - $31.92 | 517 |  | 1.44 |  | 517 |  | 1.44 |  | 0.60% - 3.03% | 3.18 - 6.52 | 36.93% - 53.80%
* The expected dividend yield is zero for all options in all years.
Summary of Non-Vested Restricted Stock And Restricted Stock Units Activity | The following table summarizes the non-vested restricted stock and restricted stock units activity for the years ended December 31, 2021, 2020 and 2019:
|  | 2021 |  | 2020 |  | 2019
|  | Shares |  | Weighted Average Grant Date Fair Value |  | Shares |  | Weighted Average Grant Date Fair Value |  | Shares |  | Weighted Average Grant Date Fair Value
Non-vested at January 1 |  | 1,000 |  |  | $ | 15.81 |  |  | 1,251 |  |  | $ | 14.69 |  |  | 1,895 |  |  | $ | 15.31 |
Granted |  | 818 |  |  | 13.98 |  |  | 969 |  |  | 15.80 |  |  | 1,003 |  |  | 15.10 |
Vested |  | (822) |  |  | 15.01 |  |  | (861) |  |  | 14.11 |  |  | (765) |  |  | 16.18 |
Forfeited |  | (305) |  |  | 15.32 |  |  | (359) |  |  | 15.95 |  |  | (882) |  |  | 15.20 |
Non-vested at December 31 |  | 691 |  |  | 14.82 |  |  | 1,000 |  |  | 15.81 |  |  | 1,251 |  |  | 14.69 |

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