Cover - USD ($) $ in Billions	12 Months Ended
Cover - USD ($) $ in Billions	Dec. 31, 2019	Mar. 31, 2020	Jun. 30, 2019
Cover page.
Document Type	10-K/A
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		56,235,157
Documents Incorporated by Reference	Mellanox Technologies, Ltd. (“ Mellanox ,” the “ Company ,” “ we ,” “ us ” or “ our ”) filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2019 (“ Form 10-K ”) with the U.S. Securities and Exchange Commission (the “ SEC ”) on February 20, 2020. The Company is filing this Amendment No. 1 to the Form 10-K, or “ Form 10-K/A ,” solely for the purpose of including the Part III information. This Form 10-K/A hereby amends and restates in their entirety Items 10 through 14 of Part III of the Form 10-K. Pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended, this Form 10-K/A also contains new certifications by the principal executive officer and the principal financial officer as required by Section 302 of the Sarbanes-Oxley Act of 2002. Accordingly, Item 15(b) of Part IV is amended to include the currently dated certifications as exhibits. Because no financial statements have been included in this Form 10-K/A and this Form 10-K/A does not contain or amend any disclosure with respect to Items 307 and 308 of Regulation S-K, paragraphs 3, 4, and 5 of the certifications have been omitted. Except as expressly noted in this Form 10-K/A, this Form 10-K/A does not reflect events occurring after the original filing of the Form 10-K or modify or update in any way any of the other disclosures contained in the Form 10-K including, without limitation, the financial statements. Accordingly, this Form 10-K/A should be read in conjunction with the Company’s Form 10-K and the Company’s other filings with the SEC.
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

Mellanox Technologies, Ltd. 10-K/A