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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2021
Stockholders' Equity [Abstract] |
Stock Option and Restricted Stock Activity | The following table summarizes stock option and restricted stock activity for the Plans:
|  |  |  |  | Stock Options |  |  | Restricted Shares |
|  | Shares Available for Grant |  |  | Shares |  |  | Weighted Average Exercise Price per Share ($) |  |  | Shares |  |  | Weighted Average Exercise Price per Share ($) |
Balance January 1, 2019 |  |  | 866,023 |  |  |  | 1,054,259 |  |  | $ | 54.04 |  |  |  | 134,578 |  |  | $ | 68.64 |
Granted |  |  | (388,162 | ) |  |  | 271,261 |  |  |  | 54.44 |  |  |  | 116,901 |  |  |  | 54.51 |
Exercised/vested |  |  | — |  |  |  | (79,686 | ) |  |  | 27.26 |  |  |  | (40,776 | ) |  |  | 60.79 |
Canceled |  |  | 51,181 |  |  |  | (18,214 | ) |  |  | 66.93 |  |  |  | (32,967 | ) |  |  | 61.87 |
Balance December 31, 2019 |  |  | 529,042 |  |  |  | 1,227,620 |  |  |  | 55.83 |  |  |  | 177,736 |  |  |  | 62.40 |
Authorized |  |  | 1,300,000 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Granted |  |  | (394,290 | ) |  |  | 286,078 |  |  |  | 57.67 |  |  |  | 108,212 |  |  |  | 56.93 |
Exercised/vested |  |  | — |  |  |  | (93,099 | ) |  |  | 35.11 |  |  |  | (43,702 | ) |  |  | 66.07 |
Canceled |  |  | 97,494 |  |  |  | (57,233 | ) |  |  | 63.92 |  |  |  | (40,261 | ) |  |  | 65.42 |
Balance December 31, 2020 |  |  | 1,532,246 |  |  |  | 1,363,366 |  |  |  | 57.29 |  |  |  | 201,985 |  |  |  | 58.07 |
Granted |  |  | (358,078 | ) |  |  | 255,769 |  |  |  | 66.00 |  |  |  | 102,309 |  |  |  | 66.20 |
Exercised/vested |  |  | — |  |  |  | (251,195 | ) |  |  | 51.12 |  |  |  | (51,497 | ) |  |  | 60.40 |
Canceled |  |  | 94,602 |  |  |  | (37,938 | ) |  |  | 64.92 |  |  |  | (56,664 | ) |  |  | 60.98 |
Balance December 31, 2021 |  |  | 1,268,770 |  |  |  | 1,330,002 |  |  | $ | 59.91 |  |  |  | 196,133 |  |  | $ | 60.87 |

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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, 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 (e) -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 (c)(2) -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 (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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