Document and Entity Information Document - shares	3 Months Ended
	Dec. 31, 2016	Feb. 14, 2017
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, 2016
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		9,348,388