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- Definition

Share-Based Compensation Arrangement By Share-based Payment Award, Number Of Additional Shares Allowable Under The Plan

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercise Threshold as a Percentage of Share Price

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- Definition

Aggregate number of common shares reserved for future issuance.

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-Name Accounting Standards Codification
-Topic 210
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-Section S99
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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

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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- Definition

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

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

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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 shares authorized for issuance under share-based payment arrangement.

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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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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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

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Stock Option Plans - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate intrinsic value of options exercised		$ 47,861	$ 24,867	$ 787
Weighted average grant date fair value (in USD per share)		$ 18.22	$ 10.17	$ 2.93
Fair value of options vested		$ 5,138	$ 2,221	$ 569
Common stock reserved for future issuance (in shares)		6,660,892	6,237,832
Compensation expensed not yet recognized		$ 20,188
ISO and NSO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option term		10 years
Option vesting term		4 years
ISO and NSO \| 10% Stockholders
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise threshold as a percentage of fair value of shares		110.00%
ISO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise threshold as a percentage of fair value of shares		100.00%
NSO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise threshold as a percentage of fair value of shares		85.00%
2019 ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares allowable under the plan (in shares)	1,200,000
Percent of outstanding shares of common stock	1.00%
Common stock reserved for future issuance (in shares)	434,000	746,552
Percent of purchase of price of common stock	85.00%
Issuance of common stock under employee stock purchase plan (in shares)		114,175,000
Shares available for future issuance (in shares)		632,377,000
Compensation expensed not yet recognized, period for recognition		4 months 17 days
Unrecognized compensation costs related to the ESPP		$ 295
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expensed not yet recognized, period for recognition		3 years 7 days
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting term		4 years
Restricted stock vested (in shares)		0
Compensation expensed not yet recognized, period for recognition		3 years 5 months 23 days
Unrecognized compensation costs of unvested RSUs		$ 2,716
2019 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for issuance (in shares)	2,317,000	3,635,009
Percent of outstanding shares of common stock	4.00%
2019 Equity Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares allowable under the plan (in shares)	3,000,000