Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Nov. 05, 2015
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q3
Entity Registrant Name	HUDSON TECHNOLOGIES INC /NY
Entity Central Index Key	0000925528
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Trading Symbol	HDSN
Entity Common Stock, Shares Outstanding		32,686,196