Document and Entity Information Document - USD ($)	12 Months Ended
	Sep. 30, 2016	Dec. 30, 2016	Mar. 31, 2016
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-K
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		9,348,388
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 10,706,000