Organization and Business (Details)	3 Months Ended
Jun. 30, 2013 item
Business Disclosure Abstract
Number of proprietary products in clinical development	2

Represents the number of proprietary products and several proprietary product candidates in clinical development addresses address large market opportunities in epilepsy and attention deficit hyperactivity disorder.

No definition available.

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