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Commitments and Contingent Liabilities - Additional Information (Details) - USD ($)		1 Months Ended	6 Months Ended
	Mar. 17, 2021	Sep. 30, 2020	Jun. 30, 2021
Commitments And Contingencies [Line Items]
Potential losses from claims, legal proceedings probable of occurring			$ 0
Maximum number of months before FDA can approve patent request		30 months
VUMERITY ANDA Litigation
Commitments And Contingencies [Line Items]
Maximum number of months before FDA can approve patent request	30 months

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+ References

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- Definition

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- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349

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