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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Share-based Compensation, Activity | The following table presents our total stock-based compensation expense:
| Year Ended
| 2020 |  | 2019 |  | 2018
Employee stock-based compensation expense |  |  |  |  |
Pre-tax (1) | $ | 876 |  |  | $ | 2,019 |  |  | $ | 1,095 |
Post-tax (2) | 692 |  |  | 1,595 |  |  | 865 |
Director stock-based compensation expense |  |  |  |  |
Pre-tax (1) | 506 |  |  | 988 |  |  | 1,319 |
Post-tax (2) | 400 |  |  | 781 |  |  | 1,042 |
(1) This table does not include withholding of vested shares for tax liabilities, which totaled $112,000, $296,000, and $418,000 in 2020, 2019, and 2018, respectively. (2) The after tax amounts are determined using the 21% corporate federal tax rate.
Schedule of Nonvested Share Activity | The following table presents certain information related to the activity of our non-vested common stock grants:
| Number of Restricted Shares |  | Weighted Average Grant Date Fair Value
Outstanding as of December 31, 2017 | 212,094 |  |  | $ | 16.44 |
Granted | 174,602 |  |  | 20.07 |
Less: Forfeited | 21,502 |  |  | 18.82 |
Less: Vested | 147,258 |  |  | 16.68 |
Outstanding as of December 31, 2018 | 217,936 |  |  | $ | 18.96 |
Granted | 134,231 |  |  | 16.24 |
Less: Forfeited | 6,059 |  |  | 20.15 |
Less: Vested | 131,613 |  |  | 19.22 |
Outstanding as of December 31, 2019 | 214,495 |  |  | $ | 17.49 |
Granted (1) | 386,101 |  |  | 9.33 |
Less: Forfeited | 232,323 |  |  | 12.61 |
Less: Vested (1) | 109,267 |  |  | 16.63 |
Outstanding as of December 31, 2020 | 259,006 |  |  | $ | 10.06 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The following weighted-average assumptions were used to value the stock options granted:
| 2020
Expected annual dividend yield | 1.70 | %
Expected volatility | 41.59 | %
Risk-free interest rate | 2.35 | %
Expected term | 6 | years
Schedule of Share-based Compensation, Stock Options and Stock Appreciation Rights Award Activity | The following table presents certain information related to the activity of our non-vested stock option grants:
| Number of Stock Options |  | Weighted Average Exercise Prices |  | Weighted Average Remaining Contractual Term (years) |  | Aggregate Intrinsic Value
Outstanding as of December 31, 2017 | — |  |  | $ | — |  |  | — |  |  |
Granted | 107,888 |  |  | 20.94 |  |  | — |  |  | — |
Less: Forfeited | — |  |  | — |  |  | — |  |  | — |
Less: Exercised | — |  |  | — |  |  | — |  |  | — |
Outstanding as of December 31, 2018 | 107,888 |  |  | $ | 20.94 |  |  | 9.76 |  |  | $ | — |
Vested as of December 31, 2018 | — |  |  | $ | — |  |  | — |  |  | $ | — |
Exercisable as of December 31, 2018 | — |  |  | $ | — |  |  | — |  |  | $ | — |
Outstanding as of December 31, 2018 | 107,888 |  |  | $ | 20.94 |  |  | 9.76 |  |  | $ | — |
Granted | 99,181 |  |  | 16.25 |  |  | — |  |  | — |
Less: Forfeited | — |  |  | — |  |  | — |  |  | — |
Less: Exercised | — |  |  | — |  |  | — |  |  | — |
Outstanding as of December 31, 2019 | 207,069 |  |  | $ | 18.69 |  |  | 9.00 |  |  | $ | — |
Vested as of December 31, 2019 | 35,965 |  |  | $ | 20.94 |  |  | 8.76 |  |  | $ | — |
Exercisable as of December 31, 2019 | 35,965 |  |  | $ | 20.94 |  |  | 8.76 |  |  | $ | — |
Outstanding as of December 31, 2019 | 207,069 |  |  | $ | 18.69 |  |  | 9.00 |  |  | $ | — |
Granted | 221,541 |  |  | 8.77 |  |  | — |  |  | — |
Less: Forfeited | 234,472 |  |  | 12.76 |  |  | — |  |  | — |
Less: Exercised | — |  |  | — |  |  | — |  |  | — |
Less: Expired | 50,132 |  |  | 18.94 |  |  | — |  |  | — |
Outstanding as of December 31, 2020 | 144,006 |  |  | $ | 13.00 |  |  | 8.77 |  |  | $ | — |
Vested as of December 31, 2020 (1) | 80,728 |  |  | $ | 19.01 |  |  | 7.95 |  |  | $ | — |
Exercisable as of December 31, 2020 | 30,596 |  |  | $ | 19.11 |  |  | 7.95 |  |  | $ | — |

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