Description of Business - Additional Information (Detail)	Jun. 30, 2020 ProprietaryProduct
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of proprietary products directly marketed and sold	2

Number of proprietary products directly marketed and sold.

No definition available.

Name:	atrs_NumberOfProprietaryProductsDirectlyMarketedAndSold
Namespace Prefix:	atrs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant