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Restricted Stock and Stock Options (Tables) | 12 Months Ended
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Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Stock Option Activity | The following table summarizes information about the stock option activity under the 2005 Incentive Plan:
|  | Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Life (in years) |
Outstanding at January 1, 2018 |  |  | 20,000 |  |  |  | 5.21 |  |  |  | 2.1 |
Granted |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | (15,000 | ) |  |  | 4.46 |  |  |  | 0.9 |
Canceled, forfeited, or expired |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at December 31, 2018 |  |  | 5,000 |  |  |  | 3.95 |  |  |  | 1.9 |
Exercisable at December 31, 2018 |  |  | 5,000 |  |  |  | 3.95 |  |  |  | 1.9 |
Outstanding at January 1, 2019 |  |  | 5,000 |  |  |  | 3.95 |  |  |  | 1.9 |
Granted |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | (5,000 | ) |  |  | 3.95 |  |  |  | 0.9 |
Canceled, forfeited, or expired |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at December 31, 2019 |  |  | — |  |  |  | — |  |  |  | — |
Exercisable at December 31, 2019 |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at January 1, 2020 |  |  | — |  |  |  | — |  |  |  | — |
Granted |  |  | — |  |  |  | — |  |  |  | — |
Exercised |  |  | — |  |  |  | — |  |  |  | — |
Canceled, forfeited, or expired |  |  | — |  |  |  | — |  |  |  | — |
Outstanding at December 31, 2020 |  |  | — |  |  |  | — |  |  |  | — |
Exercisable at December 31, 2020 |  |  | — |  |  |  | — |  |  |  | — |
Weighted Average Grant Date Fair Values of Options Granted |
|  | 2020 |  |  | 2019 |  |  | 2018 |
|  | (in thousands) |
Cash received from option exercises |  | $ | — |  |  | $ | 20 |  |  | $ | 67 |
Total intrinsic value of options exercised |  |  | — |  |  |  | 287 |  |  |  | 766 |
Aggregate intrinsic value of vested options outstanding |  |  | — |  |  |  | — |  |  |  | 264 |
Restricted Stock Activity | The following table summarizes information about the common and restricted stock activity under the 2012 Incentive Plan:
|  | Shares |  |  | Weighted Average Grant Date Fair Value per Share |
Nonvested balance at January 1, 2018 |  |  | 60,879 |  |  |  | 45.71 |
Granted |  |  | 3,304 |  |  |  | 59.16 |
Vested |  |  | (24,608 | ) |  |  | 44.31 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2018 |  |  | 39,575 |  |  |  | 48.93 |
Granted |  |  | 22,713 |  |  |  | 61.08 |
Vested |  |  | (29,760 | ) |  |  | 51.86 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2019 |  |  | 32,528 |  |  |  | 54.02 |
Granted |  |  | 23,207 |  |  |  | 58.62 |
Vested |  |  | (40,421 | ) |  |  | 54.31 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2020 |  |  | 15,314 |  |  |  | 60.23 |
The following table summarizes information about the restricted stock activity under the Non-Employee Director Restricted Stock Plan:
|  | Shares |  |  | Weighted Average Grant Date Fair Value per Share |
Nonvested balance at January 1, 2018 |  |  | 6,454 |  |  |  | 54.20 |
Granted |  |  | 5,761 |  |  |  | 60.75 |
Vested |  |  | (6,454 | ) |  |  | 54.20 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2018 |  |  | 5,761 |  |  |  | 60.75 |
Granted |  |  | 4,890 |  |  |  | 61.34 |
Vested |  |  | (5,761 | ) |  |  | 60.75 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2019 |  |  | 4,890 |  |  |  | 61.34 |
Granted |  |  | 5,269 |  |  |  | 68.88 |
Vested |  |  | (5,091 | ) |  |  | 61.49 |
Forfeited |  |  | — |  |  |  | — |
Nonvested balance at December 31, 2020 |  |  | 5,068 |  |  |  | 69.03 |

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