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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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-Name Accounting Standards Codification
-Topic 260
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Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

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No definition available.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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- Definition

Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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- Definition

Face amount or stated value per share of common stock.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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The Company and Summary of Significant Accounting Policies - Additional Information (Detail) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) Segment $ / shares shares	Dec. 31, 2020 $ / shares shares	Dec. 31, 2019 shares	Dec. 12, 2021 $ / shares
Schedule Of Significant Accounting Policies [Line Items]
Number of business segments \| Segment	1
Common stock, par value (in USD per share) \| $ / shares	$ 0.0001	$ 0.0001		$ 0.0001
Cash and short-term investments \| $	$ 700.0
Number of reportable business segment \| Segment	1
Total antidilutive securities excluded from calculation of diluted net loss per share (in shares) \| shares	4.2	5.2	4.0
Pfizer
Schedule Of Significant Accounting Policies [Line Items]
Business acquisition, share price (in usd per share) \| $ / shares				$ 100.00
Transaction costs \| $	$ 7.3
Building
Schedule Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	20 years
Minimum
Schedule Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	3 years
Maximum
Schedule Of Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	15 years
Sales revenue, net \| Customer Concentration Risk \| United Therapeutics
Schedule Of Significant Accounting Policies [Line Items]
Concentrations of risk percentage			99.00%