Organization and Nature Business (Details)	12 Months Ended
Dec. 31, 2018 product
Organization and Nature of Operations
Number of commercial products	2

The number of proprietary commercial products market by the company.

No definition available.

Name:	supn_NumberOfProprietaryCommercialProducts
Namespace Prefix:	supn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration