Composition of Other Balance Sheet Items - Accrued Product Returns and Rebates (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued product rebates	$ 119,162	$ 97,597
Accrued product returns	39,308	35,127
Total	$ 158,470	$ 132,724

Carrying value as of the balance sheet date of accrued product returns and rebates.

No definition available.

Name:	supn_AccruedProductReturnsAndRebates
Namespace Prefix:	supn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant