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Accounting for Stock Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2021
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 |  | 2021 |  |  | 2020 |  |  | 2019 |  |  | Unrecognized Stock-Based Compensation Expense at December 31, 2021 |
Options |  | $ | 482 |  |  | $ | 836 |  |  | $ | 885 |  |  | $ | - |
Restricted Shares |  |  | 1,198 |  |  |  | 1,495 |  |  |  | 1,600 |  |  |  | 309 |
Restricted Stock Units |  |  | 4,594 |  |  |  | 3,137 |  |  |  | 1,751 |  |  |  | 7,423 |
Performance Based Units |  |  | 5,535 |  |  |  | 3,361 |  |  |  | 2,017 |  |  |  | 8,572 |
Stock Appreciation Rights |  |  | 2,721 |  |  |  | 5,494 |  |  |  | 2,336 |  |  |  | - |
Total Stock-Based Compensation |  | $ | 14,530 |  |  | $ | 14,323 |  |  | $ | 8,589 |  |  | $ | 16,304 |
Summary of Stock Option Activity | The following table summarizes stock option activity during the years ended December 31, 2021, 2020 and 2019:
Options |  | Shares |  |  | Weighted-Average Exercise Price |  |  | Weighted-Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2018 |  |  | 1,653,000 |  |  | $ | 38.53 |  |  |  | 4.28 |  |  | $ | 3,610 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | (428,250 | ) |  |  | 38.66 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (355,750 | ) |  |  | 39.99 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2019 |  |  | 869,000 |  |  | $ | 37.87 |  |  |  | 3.51 |  |  | $ | 5,172 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | (434,250 | ) |  |  | 38.12 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (6,750 | ) |  |  | 38.05 |  |  |  |  |  |  |  |  |
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 |
Exercisable at December 31, 2021 |  |  | 206,750 |  |  | $ | 36.72 |  |  |  | 2.60 |  |  | $ | 10,375 |
Restricted Stock Activity | The following table summarizes restricted stock activity during the years ended December 31, 2021, 2020 and 2019:
Unvested Restricted Shares |  | Shares |  |  | Weighted-Average Grant Date Fair Value |
Outstanding at December 31, 2018 |  |  | 136,566 |  |  | $ | 37.16 |
Granted |  |  | 19,920 |  |  |  | 40.16 |
Vested |  |  | (91,566 | ) |  |  | 37.09 |
Forfeited |  |  | (30,000 | ) |  |  | 38.05 |
Outstanding at December 31, 2019 |  |  | 34,920 |  |  | $ | 38.31 |
Granted |  |  | 32,406 |  |  |  | 39.96 |
Vested |  |  | (32,420 | ) |  |  | 38.33 |
Forfeited |  |  | — |  |  |  | — |
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 |
Summary of Performance Stock Unit Activity | The following table summarizes performance stock unit activity during the years ended December 31, 2021, 2020 and 2019:
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 |  |  | Total |
Outstanding at December 31, 2018 |  |  | 64,785 |  |  | $ | 62.45 |  |  |  | 64,792 |  |  | $ | 42.53 |  |  |  | — |  |  | $ | — |  |  |  | 129,577 |
Granted |  |  | 56,380 |  |  |  | 57.39 |  |  |  | 56,375 |  |  |  | 41.51 |  |  |  | — |  |  |  | — |  |  |  | 112,755 |
Vested |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Forfeited |  |  | (26,124 | ) |  |  | 53.98 |  |  |  | (26,128 | ) |  |  | 39.41 |  |  |  | — |  |  |  | — |  |  |  | (52,252 | )
Outstanding at December 31, 2019 |  |  | 95,041 |  |  | $ | 61.77 |  |  |  | 95,039 |  |  | $ | 42.78 |  |  |  | — |  |  | $ | — |  |  |  | 190,080 |
Granted |  |  | 77,967 |  |  |  | 49.25 |  |  |  | 77,967 |  |  |  | 33.72 |  |  |  | — |  |  |  | — |  |  |  | 155,934 |
Vested |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Forfeited |  |  | (15,090 | ) |  |  | 56.84 |  |  |  | (15,090 | ) |  |  | 39.96 |  |  |  | — |  |  |  | — |  |  |  | (30,180 | )
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 |
SARs Activity | The following table summarizes SARs activity during the years ended December 31, 2021, 2020 and 2019:
Stock Appreciation Rights |  | Shares |  |  | Weighted-Average Exercise Price |  |  | Weighted-Average Remaining Contractual Term |  |  | Aggregate Intrinsic Value |
Outstanding at December 31, 2018 |  |  | 988,100 |  |  | $ | 40.61 |  |  |  | 3.57 |  |  | $ | 2,064 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | (179,500 | ) |  |  | 32.84 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (254,350 | ) |  |  | 42.63 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2019 |  |  | 554,250 |  |  | $ | 39.41 |  |  |  | 2.84 |  |  | $ | 2,981 |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | (342,150 | ) |  |  | 38.22 |  |  |  |  |  |  |  |  |
Forfeited |  |  | (40,500 | ) |  |  | 44.39 |  |  |  |  |  |  |  |  |
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 |
Exercisable at December 31, 2021 |  |  | 55,600 |  |  | $ | 41.15 |  |  |  | 1.28 |  |  | $ | 2,544 |
RSU |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |
Restricted Stock Activity | The following table summarizes restricted stock unit activity during the years ended December 31, 2021, 2020 and 2019:
Unvested Restricted Stock Units |  | Time Vesting Shares |  |  | Weighted-Average Grant Date Fair Value |
Outstanding at December 31, 2018 |  |  | 86,392 |  |  | $ | 42.53 |
Granted |  |  | 107,391 |  |  |  | 40.99 |
Vested |  |  | (23,956 | ) |  |  | 42.62 |
Forfeited |  |  | (28,086 | ) |  |  | 39.88 |
Outstanding at December 31, 2019 |  |  | 141,741 |  |  | $ | 42.16 |
Granted |  |  | 132,864 |  |  |  | 34.41 |
Vested |  |  | (50,953 | ) |  |  | 42.13 |
Forfeited |  |  | (14,747 | ) |  |  | 39.16 |
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 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock appreciation rights awards that were outstanding at the beginning and end of the year, and the number of stock appreciation rights awards that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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