CORTROPHIN PRE-LAUNCH CHARGES (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
CORTROPHIN PRE-LAUNCH CHARGES
Cortrophin pre-launch charges	$ 6,500	$ 11,263	$ 6,706

Amount of charges directly related to the Cortrophin pre-launch commercialization efforts, including but not limited to sales and marketing expenses.

No definition available.

Name:	anip_CortrophinPreLaunchCharges
Namespace Prefix:	anip_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration