Document and Entity Information Document
Aug. 08, 2019
Cover page.  
Document Type 8-K
Document Period End Date Aug. 08, 2019
Entity Registrant Name TENABLE HOLDINGS, INC.
Entity Incorporation, State or Country Code DE
Entity File Number 001-38600
Entity Tax Identification Number 47-5580846
Entity Address, Address Line One 7021 Columbia Gateway Drive
Entity Address, Address Line Two Suite 500
Entity Address, City or Town Columbia
Entity Address, State or Province MD
Entity Address, Postal Zip Code 21046
City Area Code 410
Local Phone Number 872-0555
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.01 per share
Trading Symbol TENB
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Entity Ex Transition Period true
Entity Central Index Key 0001660280
Amendment Flag false