Number of employee option modification.

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- Definition

Receivable for stock option exercises.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award outstanding number.

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No definition available.

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- Definition

Share based compensation arrangement by share based payment award vested and exercisable options outstanding weighted average remaining contractual term.

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No definition available.

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- Definition

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

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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.

+ References

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- Definition

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

+ References

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- Definition

Amount of cash inflow from exercise of 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 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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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

Rate of weighted-average expected volatility for award under share-based payment arrangement.

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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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No definition available.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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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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- 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

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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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Equity Incentive Plans - Additional Information (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) Option $ / shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average remaining contractual life options outstanding	7 years 1 month 6 days
Weighted-average remaining contractual life vested and exercisable options outstanding	5 years 10 months 24 days
Weighted-average grant date fair value \| $ / shares	$ 21.11	$ 6.87	$ 4.15
Total intrinsic value of options exercised	$ 190,400	$ 39,100	$ 3,800
Proceeds from exercise of stock options	$ 21,748	$ 4,055	$ 1,268
Weighted-average volatility	71.40%	68.10%	68.10%
Share-based compensation expense	$ 24,761	$ 13,124	$ 11,149
Number of employee option modification \| Option			1
Incremental stock compensation			$ 500
Unrecognized share-based compensation expense related to unvested stock options	$ 74,900
Unrecognized share-based compensation expense related to unvested stock options, weighted-average period for recognition	3 years
Option Valuation Model
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expected dividend yield	0.00%
Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized share-based compensation expense related to unvested stock options, weighted-average period for recognition	3 years 3 months 18 days
Unrecognized share-based compensation expense related to unvested RSUs	$ 1,100
Sequenta 2008 Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future issuance \| shares	0
Equity awards outstanding \| shares	0
2009 Equity Incentive Plan \| Grant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future issuance \| shares	0
2009 Equity Incentive Plan \| Grant \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option expiration period	10 years
2019 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares available for future issuance \| shares	18,617,001	15,396,254
2019 Equity Incentive Plan \| Grant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized for issuance \| shares	22,109,217
2019 Equity Incentive Plan \| Grant \| Non Employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	4 years
2019 Equity Incentive Plan \| Grant \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option expiration period	10 years
2019 Equity Incentive Plan \| Restricted Stock Units
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-average grant date fair value \| $ / shares	$ 28.10	$ 41.63
Proceeds from exercise of stock options	$ 500
2019 Equity Incentive Plan \| Restricted Stock Units \| Prepaid Expenses and Other Current Assets
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unsettled cash proceeds related to stock options exercised	$ 300	$ 500