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Share-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Share-Based Compensation Expense and Related Tax Benefits | The table below provides the share-based compensation expense and related tax benefits for the periods indicated:
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Share-based compensation expense |  | $ | 2,544 |  |  | $ | 3,125 |  |  | $ | 3,515 |
Related tax benefits |  | $ | 734 |  |  | $ | 941 |  |  | $ | 984 |
Summary of Information under Plans | The following information under the Plans is presented for the periods indicated:
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Fair value of options vested |  | $ | — |  |  | $ | — |  |  | $ | 184 |
Total intrinsic value of options exercised (1) |  | $ | — |  |  | $ | 842 |  |  | $ | — |
Cash received from options exercised |  | $ | — |  |  | $ | 2,979 |  |  | $ | — |
(1) | Intrinsic value represents the difference between the closing stock price on the exercise date and the exercise price, multiplied by the number of options.
Summary of Stock Option Transactions under Plans | The following is a summary of stock option transactions under the Plans for the periods indicated:
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
|  | Number of Shares |  |  | Weighted- Average Exercise Price Per Share |  |  | Number of Shares |  |  | Weighted- Average Exercise Price Per Share |  |  | Number of Shares |  |  | Weighted- Average Exercise Price Per Share |
Options outstanding at beginning of period |  |  | 156,438 |  |  | $ | 18.84 |  |  |  | 338,338 |  |  | $ | 17.52 |  |  |  | 364,088 |  |  | $ | 17.86 |
Options exercised |  |  | — |  |  | $ | — |  |  |  | (181,900 | ) |  | $ | 16.38 |  |  |  | (25,750 | ) |  | $ | 22.06 |
Options forfeited |  |  | (30,500 | ) |  | $ | 15.73 |  |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |
Options expired |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |
Options outstanding at end of period |  |  | 125,938 |  |  | $ | 19.59 |  |  |  | 156,438 |  |  | $ | 18.84 |  |  |  | 338,338 |  |  | $ | 17.52 |
Options exercisable at end of period |  |  | 125,938 |  |  | $ | 19.59 |  |  |  | 156,438 |  |  | $ | 18.84 |  |  |  | 338,338 |  |  | $ | 17.52 |
Summary of Stock Options Outstanding under Plans | As of December 31, 2020, stock options outstanding under the Plans were as follows:
|  | Options Outstanding |  | Options Exercisable
|  | Number of Shares |  |  | Intrinsic Value (1) |  |  | Weighted- Average Average Exercise Price Per Share |  |  | Weighted- Average Remaining Contractual Life |  | Number of Shares |  |  | Intrinsic Value (1) |  |  | Weighted- Average Exercise Price Per Share |  |  | Weighted- Average Remaining Contractual Life
$10.80 to $14.99 |  |  | 4,938 |  |  | $ | — |  |  | $ | 12.54 |  |  | 1.95 years |  |  | 4,938 |  |  | $ | — |  |  | $ | 12.54 |  |  | 1.95 years
$15.00 to $19.99 |  |  | 50,000 |  |  |  | — |  |  |  | 16.43 |  |  | 2.66 years |  |  | 50,000 |  |  |  | — |  |  |  | 16.43 |  |  | 2.66 years
$20.00 to $24.83 |  |  | 71,000 |  |  |  | — |  |  |  | 22.31 |  |  | 3.84 years |  |  | 71,000 |  |  |  | — |  |  |  | 22.31 |  |  | 3.84 years
|  |  | 125,938 |  |  | $ | — |  |  | $ | 19.59 |  |  |  |  |  | 125,938 |  |  |  |  |  |  | $ | 19.59 |  |  |
(1) | Intrinsic value represents the difference between the closing stock price on the last trading day of the period, which was $11.34 as of December 31, 2020, and the exercise price, multiplied by the number of options. This value is presented in thousands.
Schedule of Restricted Stock Awards under 2013 Plan | The table below provides information for restricted stock awards under the 2013 Plan for the periods indicated:
|  | 2020 |  |  | 2019 |  |  | 2018 |
|  | Number of Shares |  |  | Weighted- Average Grant Date Fair Value Per Share |  |  | Number of Shares |  |  | Weighted- Average Grant Date Per Share |  |  | Number of Shares |  |  | Weighted- Average Grant Date Fair Value Per Share |
Restricted stock at beginning of period |  |  | 296,201 |  |  | $ | 22.91 |  |  |  | 304,595 |  |  | $ | 21.98 |  |  |  | 317,783 |  |  | $ | 21.09 |
Restricted stock granted |  |  | 125,896 |  |  | $ | 8.51 |  |  |  | 181,204 |  |  | $ | 22.05 |  |  |  | 156,771 |  |  | $ | 25.02 |
Restricted stock vested |  |  | (137,892 | ) |  | $ | 24.68 |  |  |  | (99,527 | ) |  | $ | 27.56 |  |  |  | (106,674 | ) |  | $ | 27.11 |
Restricted stock forfeited |  |  | (40,497 | ) |  | $ | 16.55 |  |  |  | (90,071 | ) |  | $ | 13.78 |  |  |  | (63,285 | ) |  | $ | 15.38 |
Restricted stock at end of period |  |  | 243,708 |  |  | $ | 15.60 |  |  |  | 296,201 |  |  | $ | 22.91 |  |  |  | 304,595 |  |  | $ | 21.98 |

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