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Stock-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2021
Share-based Payment Arrangement, Noncash Expense [Abstract] |
Stock-based Compensation Expense | Stock-based compensation expense and related tax benefits recognized under the 2006 Plan for the years ended December 31, are as follows (in thousands):
| 2021 |  | 2020 |  | 2019
Stock-settled bonus awards | $ | 820 |  |  | $ | 1,265 |  |  | $ | 1,685 |
Vesting stock awards | 2,273 |  |  | 1,593 |  |  | 1,579 |
Performance share awards | 784 |  |  | — |  |  | — |
Total | $ | 3,877 |  |  | $ | 2,858 |  |  | $ | 3,264 |
Tax benefit recognized from stock-based compensation | $ | 967 |  |  | $ | 713 |  |  | $ | 663 |
Schedule of Other Restricted Stock Awards | Vesting stock award activity for the year ended December 31, 2021 was:
|  | Number of Shares |  | Weighted Average Grant Date Fair Value
Unvested as of December 31, 2020 |  | 56,284 |  | $ | 32.23 |
Granted |  | 54,449 |  | $ | 41.90 |
Vested |  | (49,382) |  | $ | 34.55 |
Forfeited |  | — |  | $ | — |
Unvested as of December 31, 2021 |  | 61,351 |  | $ | 38.80 |

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