Document and Entity Information Document	9 Months Ended
	Jun. 30, 2011	Aug. 08, 2011
Entity Information [Line Items]
Entity Registrant Name	VICON INDUSTRIES INC /NY/
Entity Central Index Key	0000310056
Current Fiscal Year End Date	--09-30
Entity Filer Category	Smaller Reporting Company
Document Type	10-Q
Document Period End Date	Dec. 31, 2011
Document Fiscal Year Focus	2011
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		4,501,231