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Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized, Annual Increase, Percent Of Shares Outstanding

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Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized, Maximum Number Of Shares Issued Upon Exercise

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Shares Available For Grant, Annual Increase

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- Definition

Stock Issued During Period, Shares, Exercise of Stock Option Upon Repayment

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Stock Issued During Period, Value, Exercise of Stock Option Upon Repayment

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- Definition

Stock Purchase Agreement, Number Of Executive Employees

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- Definition

Subscriptions Receivable, Weighted Average Interest Rate

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Aggregate number of common shares reserved for future issuance.

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

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- Definition

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

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- Definition

Cash inflow from repayment of loans for purchasing common stock.

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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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- Definition

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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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Note received instead of cash as contribution to equity. The transaction may be a sale of capital stock or a contribution to paid-in capital.

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Stock-based Compensation - Additional Information (Details) $ / shares in Units, $ in Millions				12 Months Ended			24 Months Ended
	Jul. 28, 2021 USD ($) $ / shares	Jul. 02, 2020 shares	Jun. 08, 2020 USD ($) employee	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($)	Dec. 31, 2017 USD ($) employee	Jul. 27, 2021 $ / shares	Jul. 31, 2015 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 44.1	$ 10.6	$ 4.3
Proceeds from release of shares upon repayment				$ 0.0	1.3	0.0
Exercisable, weighted-average exercise price (usd per share) \| $ / shares				$ 19.31
Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Release of shares upon repayment				$ 0.1
Release of shares upon repayment (shares) \| shares				105,487
Settlement of subscriptions receivable, number of executive employees \| employee			2
2020 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (shares) \| shares		5,503,678
Common stock reserved for issuance, annual increase, percentage of outstanding shares		5.00%
Maximum shares that may be issued upon exercise of incentive stock options (shares) \| shares		3,650,000
Common stock available for grant (shares) \| shares				4,942,011
2020 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (shares) \| shares		1,000,000
Common stock reserved for issuance, annual increase, percentage of outstanding shares		1.00%
Number of shares available for issuance, annual increase (shares) \| shares		1,000,000
2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance (shares) \| shares									7,312,590
Common stock available for grant (shares) \| shares				0
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 40.1	10.6	4.3
Unrecognized expense for stock options				$ 101.8
Unrecognized expense, period for recognition				1 year 4 months 24 days
Stock options \| Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 0.2	$ 0.1
Unrecognized expense for stock options				$ 0.0
Subscriptions receivable, number of executive employees \| employee							2
Subscriptions receivable							$ 1.5
Subscriptions receivable, weighted average interest rate							1.90%
Proceeds from release of shares upon repayment			$ 1.3
Stock options \| 2015 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period				4 years
Expiration period				10 years
Unvested restricted stock \| Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards outstanding (shares) \| shares					513,537
Stock Option, Repriced
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 0.8
Exercisable, weighted-average exercise price (usd per share) \| $ / shares	$ 90.70
Repricing of stock options, incremental expense	$ 3.0
Stock Option, Repriced \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable, weighted-average exercise price (usd per share) \| $ / shares								$ 142.64
Stock Option, Repriced \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable, weighted-average exercise price (usd per share) \| $ / shares								$ 159.02
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				4.0	$ 0.0	$ 0.0
Unrecognized expense for RSUs				$ 21.2
Unrecognized expense, period for recognition				1 year 9 months 18 days