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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
Summary of Company's Stock Option Activity | The following table summarizes the Company’s stock option activity during the year ended December 31, 2020:
|  | Number of Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term (years) |  |  | Aggregate Intrinsic Value (in thousands) |
Outstanding at December 31, 2019 |  |  | 17,427,228 |  |  | $ | 28.69 |  |  |  |  |  |  |  |  |
Granted |  |  | 1,937,006 |  |  | $ | 43.78 |  |  |  |  |  |  |  |  |
Exercised |  |  | (2,571,633 | ) |  | $ | 28.71 |  |  |  |  |  |  |  |  |
Cancelled/forfeited |  |  | (350,607 | ) |  | $ | 31.75 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2020 |  |  | 16,441,994 |  |  | $ | 30.40 |  |  |  | 6.8 |  |  | $ | 379,233 |
Vested at December 31, 2020 |  |  | 9,691,855 |  |  | $ | 29.71 |  |  |  | 6.0 |  |  | $ | 230,156 |
Unvested at December 31, 2020 |  |  | 6,750,139 |  |  | $ | 31.38 |  |  |  | 8.0 |  |  | $ | 149,078 |
Exercisable at December 31, 2020 |  |  | 9,691,855 |  |  | $ | 29.71 |  |  |  | 6.0 |  |  | $ | 230,156 |
Summary of Company's RSU Activity | The following table summarizes the Company’s restricted stock activity during the year ended December 31, 2020:
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Aggregate Intrinsic Value (in thousands) |  |
Outstanding at December 31, 2019 |  |  | 1,445,163 |  |  | $ | 24.50 |  |  |  |  |  |
Granted |  |  | 1,079,727 |  |  | $ | 44.03 |  |  |  |  |  |
Vested |  |  | (255,953 | ) |  | $ | 23.83 |  |  |  |  |  |
Cancelled/forfeited |  |  | (61,690 | ) |  | $ | 35.95 |  |  |  |  |  |
Outstanding at December 31, 2020 |  |  | 2,207,247 |  |  | $ | 33.81 |  |  | $ | 117,999 |  |

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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 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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