COVER PAGE Document - shares	3 Months Ended
	Mar. 31, 2020	May 04, 2020
COVER PAGE [Abstract]
Entity Central Index Key	0001033905
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	LMNX
City Area Code	(512)
Entity Address, Address Line One	12212 Technology Blvd.,
Entity Incorporation, State or Country Code	DE
Entity File Number	000-30109
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity Registrant Name	LUMINEX CORPORATION
Entity Tax Identification Number	74-2747608
Entity Address, City or Town	Austin,
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	78727
Local Phone Number	219-8020
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		45,789,869
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false