Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 28, 2015
Document Information [Line Items]
Entity Registrant Name	ANI PHARMACEUTICALS INC
Entity Central Index Key	0001023024
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Trading Symbol	ANIP
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2015
Common Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		11,489,204
Class C Special Stock [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		10,864