Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2023	Nov. 03, 2023
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity Registrant Name	NORTECH SYSTEMS INCORPORATED
Entity File Number	0-13257
Entity Incorporation, State or Country Code	MN
Entity Tax Identification Number	41-1681094
Entity Address, Address Line One	7550 Meridian Circle N., Suite # 150
Entity Address, City or Town	Maple Grove
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55369
City Area Code	952
Local Phone Number	345-2244
Title of 12(b) Security	Common Stock, par value $.01 per share
Trading Symbol	NSYS
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		2,739,377
Entity Central Index Key	0000722313
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Amendment Flag	false