Document and Entity Information	6 Months Ended
	Jun. 30, 2012	Jul. 27, 2012
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Trading Symbol	HDSN
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
Entity Common Stock, Shares Outstanding		23,873,392