Stockholders' Equity - Restricted Stock Units (Details) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) $ / shares shares
Aggregate Intrinsic Value
Unearned stock-based compensation	$ 72,400
Weighted average recognition period	2 years 9 months 18 days
Restricted stock units
Stock Options
Service period	4 years
Vesting period	4 years
Restricted Stock Units
Unvested at December 31, 2020 (in shares) \| shares	0
Granted (in shares) \| shares	2,275
Unvested at March 31, 2021 (in shares \| shares	2,275
Weighted Average Grant Date Fair Value
Unvested at December 31, 2020 (in dollars per share) \| $ / shares	$ 0
Granted (in dollars per share) \| $ / shares	201.51
Unvested at March 31, 2021 (in dollars per share) \| $ / shares	$ 201.51
Aggregate Intrinsic Value
Unvested at December 31, 2020	$ 0
Unvested at March 31, 2021	471
Unearned stock-based compensation	$ 400
Weighted average recognition period	3 years 9 months 18 days

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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