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STOCK-BASED COMPENSATION - Summary of Restricted Stock Unit Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
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Mar. 31, 2021 USD ($) $ / shares shares
Aggregate Intrinsic Value |
Share price (in usd per share) | $ 162.16
Restricted stock units |
Number of Shares Outstanding |
Outstanding, beginning balance (in shares) | shares | 3,588
Granted (in shares) | shares | 168
Vested (in shares) | shares | (847)
Canceled (in shares) | shares | (12)
Outstanding, ending balance (in shares) | shares | 2,897
Number of shares outstanding, expected to vest (in shares) | shares | 2,897
Weighted Average Fair Value per Share at Grant Date |
Outstanding, beginning balance (in usd per share) | $ 27.61
Granted (in usd per share) | 183.78
Vested (in usd per share) | 17.49
Canceled (in usd per share) | 88.18
Outstanding, ending balance (in usd per share) | 39.37
Weighted-Average Fair Value per Share at Grant Date, Expected to vest (in usd per share) | $ 39.37
Weighted-Average Remaining Contractual Term |
Outstanding | 1 year 2 months 1 day
Expected to vest | 1 year 2 months 1 day
Aggregate Intrinsic Value |
Vested | $ | $ 163,030
Outstanding | $ | 469,766
Aggregate intrinsic value, expected to vest | $ | $ 469,718

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + 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)(iv)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + 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)(iii)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + 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)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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