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Accounting for Stock Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2023
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Summary of Recognized and Unrecognized Stock-based Compensation Expense | The total recognized and unrecognized stock-based compensation expense is as follows:
Stock-Based Compensation Expense |  | 2023 |  |  | 2022 |  |  | 2021 |  |  | Unrecognized Stock-Based Compensation Expense at December 31, 2023 |  |  | Remaining Weighted Average Vesting Period |
RSUs |  | $ | 6,216 |  |  | $ | 5,551 |  |  | $ | 4,594 |  |  | $ | 9,124 |  |  |  | 1.84 |
PSUs |  |  | 4,661 |  |  |  | 954 |  |  |  | 5,535 |  |  |  | 9,724 |  |  |  | 1.97 |
Restricted Stock |  |  | 878 |  |  |  | 888 |  |  |  | 1,198 |  |  |  | 437 |  |  |  | 0.38 |
SARs |  |  | (128 | ) |  |  | (794 | ) |  |  | 2,721 |  |  |  | — |  |  |  | — |
Stock options |  |  | — |  |  |  | — |  |  |  | 482 |  |  |  | — |  |  |  | — |
Total Stock-Based Compensation |  | $ | 11,627 |  |  | $ | 6,599 |  |  | $ | 14,530 |  |  | $ | 19,285 |  |  |  | 1.87 |
Summary of PSU Activity | The following table summarizes PSU activity during the years ended December 31, 2023, 2022 and 2021:
Unvested Performance Stock Units |  | Relative TSR Target Shares |  |  | Weighted-Average Grant Date Fair Value |  |  | ROIC Target Shares |  |  | Weighted-Average Grant Date Fair Value |  |  | Adjusted EBITDA Target Shares |  |  | Weighted-Average Grant Date Fair Value |  |  | RRG Target Shares |  |  | Weighted-Average Grant Date Fair Value |  |  | Total |
Outstanding at December 31, 2020 |  |  | 157,918 |  |  | $ | 56.06 |  |  |  | 157,916 |  |  | $ | 38.58 |  |  |  | — |  |  | $ | — |  |  |  | — |  |  | $ | — |  |  |  | 315,834 |
Granted |  |  | 20,626 |  |  |  | 118.08 |  |  |  | 40,580 |  |  |  | 78.98 |  |  |  | 39,930 |  |  |  | 79.49 |  |  |  | — |  |  |  | — |  |  |  | 101,136 |
Performance Adjustment |  |  | 30,828 |  |  |  | 69.18 |  |  |  | (30,830 | ) |  |  | 44.92 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (2 | )
Vested |  |  | (61,656 | ) |  |  | 69.18 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (61,656 | )
Forfeited |  |  | (16,148 | ) |  |  | 61.10 |  |  |  | (17,374 | ) |  |  | 44.32 |  |  |  | (2,454 | ) |  |  | 79.49 |  |  |  |  |  |  | — |  |  |  | (35,976 | )
Outstanding at December 31, 2021 |  |  | 131,568 |  |  | $ | 62.09 |  |  |  | 150,292 |  |  | $ | 47.52 |  |  |  | 37,476 |  |  | $ | 79.49 |  |  |  | — |  |  | $ | — |  |  |  | 319,336 |
Granted |  |  | 21,324 |  |  |  | 103.31 |  |  |  | 42,640 |  |  |  | 68.63 |  |  |  | 42,640 |  |  |  | 68.63 |  |  |  | — |  |  |  | — |  |  |  | 106,604 |
Performance Adjustment |  |  | 45,004 |  |  |  | 57.46 |  |  |  | (2,258 | ) |  |  | 41.61 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 42,746 |
Vested |  |  | (90,371 | ) |  |  | 57.46 |  |  |  | (43,106 | ) |  |  | 41.61 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (133,477 | )
Forfeited |  |  | (4,724 | ) |  |  | 68.67 |  |  |  | (6,493 | ) |  |  | 56.87 |  |  |  | (3,543 | ) |  |  | 75.10 |  |  |  | — |  |  |  | — |  |  |  | (14,760 | )
Outstanding at December 31, 2022 |  |  | 102,801 |  |  | $ | 65.20 |  |  |  | 141,075 |  |  | $ | 55.18 |  |  |  | 76,573 |  |  | $ | 73.66 |  |  |  | — |  |  | $ | — |  |  |  | 320,449 |
Granted |  |  | 30,622 |  |  |  | 89.87 |  |  |  | 30,622 |  |  |  | 59.91 |  |  |  | 61,255 |  |  |  | 59.91 |  |  |  | 30,622 |  |  |  | 59.91 |  |  |  | 153,121 |
Performance Adjustment |  |  | — |  |  |  | — |  |  |  | (59,928 | ) |  |  | 33.90 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (59,928 | )
Vested |  |  | (59,928 | ) |  |  | 49.25 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (59,928 | )
Forfeited |  |  | (8,494 | ) |  |  | 75.67 |  |  |  | (11,618 | ) |  |  | 55.94 |  |  |  | (7,836 | ) |  |  | 70.95 |  |  |  | (789 | ) |  |  | 59.91 |  |  |  | (28,737 | )
Outstanding at December 31, 2023 |  |  | 65,001 |  |  | $ | 101.15 |  |  |  | 100,151 |  |  | $ | 69.55 |  |  |  | 129,992 |  |  | $ | 67.34 |  |  |  | 29,833 |  |  | $ | 59.91 |  |  |  | 324,977 |
Restricted Stock Activity | The following table summarizes restricted stock activity during the years ended December 31, 2023, 2022 and 2021:
Unvested Restricted Stock |  | Shares |  |  | Weighted-Average Grant Date Fair Value |
Outstanding at December 31, 2020 |  |  | 34,906 |  |  | $ | 39.82 |
Granted |  |  | 13,742 |  |  |  | 70.18 |
Vested |  |  | (37,272 | ) |  |  | 41.70 |
Forfeited |  |  | — |  |  |  | — |
Outstanding at December 31, 2021 |  |  | 11,376 |  |  | $ | 70.33 |
Granted |  |  | 13,600 |  |  |  | 73.54 |
Vested |  |  | (11,376 | ) |  |  | 70.33 |
Forfeited |  |  | — |  |  |  | — |
Outstanding at December 31, 2022 |  |  | 13,600 |  |  | $ | 73.54 |
Granted |  |  | 17,923 |  |  |  | 56.96 |
Vested |  |  | (11,900 | ) |  |  | 73.54 |
Forfeited |  |  | (1,700 | ) |  |  | 73.54 |
Outstanding at December 31, 2023 |  |  | 17,923 |  |  | $ | 56.96 |
SARs Activity | The following table summarizes SARs activity during the years ended December 31, 2023, 2022 and 2021:
Stock Appreciation Rights |  | Shares |  |  | Weighted-Average Exercise Price |  |  | Weighted-Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2020 |  |  | 171,600 |  |  | $ | 40.60 |  |  |  | 2.44 |  |  | $ | 4,224 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |
Exercised |  |  | (116,000 | ) |  |  | 40.34 |  |  |  |  |  |  |
Forfeited |  |  | — |  |  |  | — |  |  |  |  |  |  |
Outstanding at December 31, 2021 |  |  | 55,600 |  |  | $ | 41.15 |  |  |  | 1.28 |  |  | $ | 2,544 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |
Exercised |  |  | (40,850 | ) |  |  | 42.27 |  |  |  |  |  |  |
Forfeited |  |  | — |  |  |  | — |  |  |  |  |  |  |
Outstanding at December 31, 2022 |  |  | 14,750 |  |  | $ | 38.05 |  |  |  | 1.15 |  |  | $ | 402 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |
Exercised |  |  | (12,500 | ) |  |  | 38.05 |  |  |  |  |  |  |
Forfeited |  |  | — |  |  |  | — |  |  |  |  |  |  |
Outstanding at December 31, 2023 |  |  | 2,250 |  |  | $ | 38.05 |  |  |  | 0.15 |  |  | $ | 32 |
Exercisable at December 31, 2023 |  |  | 2,250 |  |  | $ | 38.05 |  |  |  | 0.15 |  |  | $ | 32 |
Summary of Stock Option Activity | The following table summarizes stock option activity during the years ended December 31, 2023, 2022 and 2021:
Options |  | Shares |  |  | Weighted-Average Exercise Price |  |  | Weighted-Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2020 |  |  | 428,000 |  |  | $ | 37.61 |  |  |  | 3.20 |  |  | $ | 11,815 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |
Exercised |  |  | (215,250 | ) |  |  | 38.46 |  |  |  |  |  |  |
Forfeited |  |  | (6,000 | ) |  |  | 38.05 |  |  |  |  |  |  |
Outstanding at December 31, 2021 |  |  | 206,750 |  |  | $ | 36.72 |  |  |  | 2.60 |  |  | $ | 10,375 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |
Exercised |  |  | (44,116 | ) |  |  | 37.87 |  |  |  |  |  |  |
Forfeited |  |  | — |  |  |  | — |  |  |  |  |  |  |
Outstanding at December 31, 2022 |  |  | 162,634 |  |  | $ | 36.41 |  |  |  | 2.68 |  |  | $ | 8,212 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |
Exercised |  |  | (6,450 | ) |  |  | 40.79 |  |  |  |  |  |  |
Forfeited |  |  | (16,500 | ) |  |  | 41.59 |  |  |  |  |  |  |
Outstanding at December 31, 2023 |  |  | 139,684 |  |  | $ | 35.59 |  |  |  | 0.90 |  |  | $ | 2,342 |
Exercisable at December 31, 2023 |  |  | 139,684 |  |  | $ | 35.59 |  |  |  | 0.90 |  |  | $ | 2,342 |
RSU |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Restricted Stock Activity | The following table summarizes RSU activity during the years ended December 31, 2023, 2022 and 2021:
Unvested Restricted Stock Units |  | Time Vesting Shares |  |  | Weighted-Average Grant Date Fair Value |
Outstanding at December 31, 2020 |  |  | 208,905 |  |  | $ | 37.26 |
Granted |  |  | 93,539 |  |  |  | 79.79 |
Vested |  |  | (88,296 | ) |  |  | 38.49 |
Forfeited |  |  | (20,522 | ) |  |  | 48.76 |
Outstanding at December 31, 2021 |  |  | 193,626 |  |  | $ | 56.02 |
Granted |  |  | 117,507 |  |  |  | 66.86 |
Vested |  |  | (95,692 | ) |  |  | 49.85 |
Forfeited |  |  | (13,863 | ) |  |  | 70.52 |
Outstanding at December 31, 2022 |  |  | 201,578 |  |  | $ | 64.27 |
Granted |  |  | 136,964 |  |  |  | 58.68 |
Vested |  |  | (82,695 | ) |  |  | 59.43 |
Forfeited |  |  | (23,986 | ) |  |  | 59.47 |
Outstanding at December 31, 2023 |  |  | 231,861 |  |  | $ | 63.19 |

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