v3.21.2

Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2021
Share-based Payment Arrangement [Abstract] |
Schedule of Stock Option Activity | Stock option activity during the nine months ended September 30, 2021 was as follows:
|  | Number of Options |  | Weighted Average Exercise Price
Balance as of January 1, 2021 |  | 670 |  |  | $ | 27.43 |
Granted |  | — |  |  | — |
Exercised |  | (297) |  |  | 19.58 |
Forfeited |  | — |  |  | — |
Balance as of September 30, 2021 |  | 373 |  |  | $ | 33.67 |
Schedule of Nonvested Restricted Stock Units Activity | Restricted stock unit activity during the nine months ended September 30, 2021 was as follows:
|  | Number of Shares |  | Weighted Average Grant Date Fair Value
Nonvested as of January 1, 2021 |  | 1,757 |  |  | $ | 70.74 |
Granted |  | 662 |  |  | 115.71 |
Vested |  | (573) |  |  | 61.92 |
Forfeited |  | (193) |  |  | 79.28 |
Nonvested as of September 30, 2021 |  | 1,653 |  |  | $ | 90.83 |
Schedule of Nonvested Market Stock Units Activity | Market stock unit activity during the nine months ended September 30, 2021 was as follows:
|  | Number of Shares |  | Weighted Average Grant Date Fair Value
Nonvested as of January 1, 2021 |  | 370 |  |  | $ | 35.67 |
Granted |  | 101 |  |  | 80.11 |
Change in awards based on performance(1) |  | 206 |  |  | 39.67 |
Vested |  | (386) |  |  | 33.62 |
Forfeited |  | (21) |  |  | 44.67 |
Nonvested as of September 30, 2021 |  | 270 |  |  | $ | 57.58 |
_______________________________________________________________________________ (1) Represents the change in the number of MSUs earned based on performance achievement for the performance period.

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- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. + 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)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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)(2) -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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