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Cover - USD ($)
$ in Billions
 12 Months Ended
Dec. 31, 2019
Feb. 14, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-33299    
Entity Registrant Name MELLANOX TECHNOLOGIES, LTD.    
Entity Incorporation, State or Country Code L3    
Entity Tax Identification Number 98-0233400    
Entity Address, Address Line One Beit Mellanox    
Entity Address, City or Town Yokneam    
Entity Address, Country IL    
Entity Address, Postal Zip Code 20692    
City Area Code 972-4    
Local Phone Number 909-7200    
Title of 12(b) Security Ordinary shares, nominal value NIS 0.0175 per share    
Trading Symbol MLNX    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 6.1
Entity Common Stock, Shares Outstanding   56,062,249  
Documents Incorporated by Reference
Portions of the registrant’s Definitive Proxy Statement, to be filed with the Securities and Exchange Commission pursuant to Regulation 14A in connection with the 2020 Annual General Meeting of Shareholders of Mellanox Technologies, Ltd. (hereinafter referred to as the “Proxy Statement”) or amendment to this Form 10-K (hereinafter referred to as the “Amendment”) are incorporated by reference in Part III of this report. Such Proxy Statement or Amendment will be filed with the Securities and Exchange Commission not later than 120 days after the conclusion of the registrant's fiscal year ended December 31, 2019.

    
Entity Central Index Key 0001356104    
Amendment Flag false    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY