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v3.19.3.a.u2

Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2019
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, 2016 |  |  | 1,202,426 |  |  |  | 1,198,725 |  |  | $ | 41.66 |  |  |  | 227,213 |  |  | $ | 49.57 |
Granted |  |  | (257,072 | ) |  |  | 187,533 |  |  |  | 77.99 |  |  |  | 69,539 |  |  |  | 78.00 |
Exercised/vested |  |  | — |  |  |  | (353,636 | ) |  |  | 41.56 |  |  |  | (61,274 | ) |  |  | 52.51 |
Canceled |  |  | 91,151 |  |  |  | (35,783 | ) |  |  | 50.47 |  |  |  | (55,368 | ) |  |  | 52.74 |
Balance December 31, 2017 |  |  | 1,036,505 |  |  |  | 996,839 |  |  |  | 48.21 |  |  |  | 180,110 |  |  |  | 58.57 |
Granted |  |  | (260,508 | ) |  |  | 191,147 |  |  |  | 76.09 |  |  |  | 69,361 |  |  |  | 76.26 |
Exercised/vested |  |  | — |  |  |  | (98,945 | ) |  |  | 33.83 |  |  |  | (59,649 | ) |  |  | 56.44 |
Canceled |  |  | 90,026 |  |  |  | (34,782 | ) |  |  | 65.47 |  |  |  | (55,244 | ) |  |  | 58.57 |
Balance December 31, 2018 |  |  | 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 |

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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=116856206&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=116856206&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=116856206&loc=d3e5070-113901 + Details
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