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Milestone payment.

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Milestone payments contingent amount.

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The number of milestone payments.

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Description of material contingencies of the registrant unless separately disclosed in the consolidated statements.

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Amount of long-term loans payable classified as other.

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The amount of cash paid for royalties during the current period.

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Technology Acquisition Agreement - Additional Information (Detail)	1 Months Ended			12 Months Ended
	Jul. 31, 2021 USD ($)	May 31, 2014 USD ($)	Jun. 30, 2007 USD ($)	Dec. 31, 2021 USD ($) Milestone	Dec. 31, 2020 USD ($)	Jun. 30, 2021 USD ($)
Technology Acquisition Agreement [Line Items]
Payment expensed as in-process research and development			$ 650,000
Milestone payment				$ (5,000,000)	$ 5,000,000
Mallinckrodt Plc [Member]
Technology Acquisition Agreement [Line Items]
Milestone payments contingent amount				$ 5,000,000
Number of milestone payments \| Milestone				1
Mallinckrodt Plc [Member] \| Gimoti [Member]
Technology Acquisition Agreement [Line Items]
Milestone payment	$ 5,000,000
Amount payable to Mallinckro dt						$ 5,000,000
Research and development expense payable					$ 5,000,000
Mallinckrodt Plc [Member] \| Rights and Patents Acquired from Questcor Pharmaceuticals Inc [Member] \| Maximum [Member]
Technology Acquisition Agreement [Line Items]
Milestone payments contingent amount				$ 52,000,000
Development Target One [Member] \| Rights and Patents Acquired from Questcor Pharmaceuticals Inc [Member]
Technology Acquisition Agreement [Line Items]
Milestone payment		$ 500,000
Development targets description				upon the initiation of the first patient dosing in the Company’s Phase 3 clinical trial for Gimoti.
Development Target Four [Member] \| Mallinckrodt Plc [Member] \| Patented Technology [Member]
Technology Acquisition Agreement [Line Items]
Development targets description				depend on Gimoti’s commercial success. The Company is required to pay Mallinckrodt a low single digit royalty percentage on net sales of Gimoti.
Milestone payments contingent amount				$ 47,000,000
Expected expiration of patent right				2030
Royalties on net sales				$ 51,000