Disaggregated Revenues - Narrative (Details) $ in Millions	9 Months Ended
Sep. 30, 2023 USD ($)
Disaggregation of Revenue [Abstract]
Non-cash royalty revenue	$ 4.0

Represents revenue from the sale of certain royalty and milestone rights.

No definition available.

Name:	supn_RevenueFromRoyaltyAgreement
Namespace Prefix:	supn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration