Acquired in-process research and development.

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Stockholders equity note stock split exchange ratio.

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Amount of expenses incurred but not yet paid nor invoiced, and liabilities classified as other.

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

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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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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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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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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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Merger and Related Transactions - Additional Information (Detail) $ in Thousands		12 Months Ended
	Nov. 08, 2022 shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 shares
Business Acquisition [Line Items]
Common stock, shares, issued \| shares		93,943,316	30,369,413
Common stock, shares, outstanding \| shares		93,943,316	30,369,413
Stock holders equity note stock split exchange ratio		1.1819
Stock-based compensation expense		$ 5,843	$ 2,829
Prior ARS Pharma [Member]
Business Acquisition [Line Items]
prepaid expense and other assets		4,400
Accrued liabilities and other liabilities		12,000
IPR&D assets		1,100
Cash, cash equivalents and short-term investments		$ 262,300
Prior Silverback [Member]
Business Acquisition [Line Items]
Common stock, shares, issued \| shares		36,535,541
Common Stock [Member]
Business Acquisition [Line Items]
Common stock, shares, outstanding \| shares		93,943,316	30,369,413	26,411,772
Common Stock [Member] \| Prior Silverback [Member]
Business Acquisition [Line Items]
Number of shares issued \| shares	36,535,541
Additional Paid-in Capital [Member] \| Prior ARS Pharma [Member]
Business Acquisition [Line Items]
Business Combination Acquisition Related Costs		$ 2,100