{"cik":1660280,"taxonomy":"us-gaap","tag":"EarningsPerShareBasicAndDiluted","label":"Earnings Per Share, Basic and Diluted","description":"The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.","entityName":"TENABLE HOLDINGS, INC.","units":{"USD/shares":[{"start":"2016-01-01","end":"2016-12-31","val":-1.81,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01","frame":"CY2016"},{"start":"2017-01-01","end":"2017-03-31","val":-0.42,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01","frame":"CY2017Q1"},{"start":"2017-01-01","end":"2017-06-30","val":-0.85,"accn":"0001660280-18-000008","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-09-07"},{"start":"2017-04-01","end":"2017-06-30","val":-0.43,"accn":"0001660280-18-000008","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-09-07"},{"start":"2017-04-01","end":"2017-06-30","val":-0.43,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01","frame":"CY2017Q2"},{"start":"2017-01-01","end":"2017-09-30","val":-1.36,"accn":"0001660280-18-000017","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-08"},{"start":"2017-07-01","end":"2017-09-30","val":-0.51,"accn":"0001660280-18-000017","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-08"},{"start":"2017-07-01","end":"2017-09-30","val":-0.51,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01","frame":"CY2017Q3"},{"start":"2017-01-01","end":"2017-12-31","val":-1.88,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01"},{"start":"2017-01-01","end":"2017-12-31","val":-1.88,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28","frame":"CY2017"},{"start":"2017-10-01","end":"2017-12-31","val":-0.52,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01","frame":"CY2017Q4"},{"start":"2018-01-01","end":"2018-03-31","val":-0.68,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01"},{"start":"2018-01-01","end":"2018-03-31","val":-0.68,"accn":"0001660280-19-000023","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-09"},{"start":"2018-01-01","end":"2018-03-31","val":-0.68,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28","frame":"CY2018Q1"},{"start":"2018-01-01","end":"2018-06-30","val":-1.41,"accn":"0001660280-18-000008","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-09-07"},{"start":"2018-01-01","end":"2018-06-30","val":-1.41,"accn":"0001660280-19-000030","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2018-04-01","end":"2018-06-30","val":-0.73,"accn":"0001660280-18-000008","fy":2018,"fp":"Q2","form":"10-Q","filed":"2018-09-07"},{"start":"2018-04-01","end":"2018-06-30","val":-0.73,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01"},{"start":"2018-04-01","end":"2018-06-30","val":-0.73,"accn":"0001660280-19-000030","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2018-04-01","end":"2018-06-30","val":-0.73,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28","frame":"CY2018Q2"},{"start":"2018-01-01","end":"2018-09-30","val":-1.34,"accn":"0001660280-18-000017","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-08"},{"start":"2018-01-01","end":"2018-09-30","val":-1.34,"accn":"0001660280-19-000036","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-14"},{"start":"2018-07-01","end":"2018-09-30","val":-0.28,"accn":"0001660280-18-000017","fy":2018,"fp":"Q3","form":"10-Q","filed":"2018-11-08"},{"start":"2018-07-01","end":"2018-09-30","val":-0.28,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01"},{"start":"2018-07-01","end":"2018-09-30","val":-0.28,"accn":"0001660280-19-000036","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-14"},{"start":"2018-07-01","end":"2018-09-30","val":-0.28,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28","frame":"CY2018Q3"},{"start":"2018-01-01","end":"2018-12-31","val":-1.38,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01"},{"start":"2018-01-01","end":"2018-12-31","val":-1.38,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28"},{"start":"2018-01-01","end":"2018-12-31","val":-1.38,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23","frame":"CY2018"},{"start":"2018-10-01","end":"2018-12-31","val":-0.21,"accn":"0001660280-19-000012","fy":2018,"fp":"FY","form":"10-K","filed":"2019-03-01"},{"start":"2018-10-01","end":"2018-12-31","val":-0.21,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28","frame":"CY2018Q4"},{"start":"2019-01-01","end":"2019-03-31","val":-0.23,"accn":"0001660280-19-000023","fy":2019,"fp":"Q1","form":"10-Q","filed":"2019-05-09"},{"start":"2019-01-01","end":"2019-03-31","val":-0.23,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28"},{"start":"2019-01-01","end":"2019-03-31","val":-0.23,"accn":"0001660280-20-000026","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07"},{"start":"2019-01-01","end":"2019-03-31","val":-0.23,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23","frame":"CY2019Q1"},{"start":"2019-01-01","end":"2019-06-30","val":-0.45,"accn":"0001660280-19-000030","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2019-01-01","end":"2019-06-30","val":-0.45,"accn":"0001660280-20-000092","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-07-30"},{"start":"2019-04-01","end":"2019-06-30","val":-0.23,"accn":"0001660280-19-000030","fy":2019,"fp":"Q2","form":"10-Q","filed":"2019-08-09"},{"start":"2019-04-01","end":"2019-06-30","val":-0.23,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28"},{"start":"2019-04-01","end":"2019-06-30","val":-0.23,"accn":"0001660280-20-000092","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-07-30"},{"start":"2019-04-01","end":"2019-06-30","val":-0.23,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23","frame":"CY2019Q2"},{"start":"2019-01-01","end":"2019-09-30","val":-0.64,"accn":"0001660280-19-000036","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-14"},{"start":"2019-01-01","end":"2019-09-30","val":-0.64,"accn":"0001660280-20-000129","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-10-29"},{"start":"2019-07-01","end":"2019-09-30","val":-0.18,"accn":"0001660280-19-000036","fy":2019,"fp":"Q3","form":"10-Q","filed":"2019-11-14"},{"start":"2019-07-01","end":"2019-09-30","val":-0.18,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28"},{"start":"2019-07-01","end":"2019-09-30","val":-0.18,"accn":"0001660280-20-000129","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-10-29"},{"start":"2019-07-01","end":"2019-09-30","val":-0.18,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23","frame":"CY2019Q3"},{"start":"2019-01-01","end":"2019-12-31","val":-1.03,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28"},{"start":"2019-01-01","end":"2019-12-31","val":-1.03,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23","frame":"CY2019"},{"start":"2019-10-01","end":"2019-12-31","val":-0.39,"accn":"0001660280-20-000012","fy":2019,"fp":"FY","form":"10-K","filed":"2020-02-28"},{"start":"2019-10-01","end":"2019-12-31","val":-0.39,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23","frame":"CY2019Q4"},{"start":"2020-01-01","end":"2020-03-31","val":-0.23,"accn":"0001660280-20-000026","fy":2020,"fp":"Q1","form":"10-Q","filed":"2020-05-07"},{"start":"2020-01-01","end":"2020-03-31","val":-0.23,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23"},{"start":"2020-01-01","end":"2020-03-31","val":-0.23,"accn":"0001660280-21-000054","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-04-29","frame":"CY2020Q1"},{"start":"2020-01-01","end":"2020-06-30","val":-0.35,"accn":"0001660280-20-000092","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-07-30"},{"start":"2020-04-01","end":"2020-06-30","val":-0.12,"accn":"0001660280-20-000092","fy":2020,"fp":"Q2","form":"10-Q","filed":"2020-07-30"},{"start":"2020-04-01","end":"2020-06-30","val":-0.12,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23","frame":"CY2020Q2"},{"start":"2020-01-01","end":"2020-09-30","val":-0.41,"accn":"0001660280-20-000129","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-10-29"},{"start":"2020-07-01","end":"2020-09-30","val":-0.06,"accn":"0001660280-20-000129","fy":2020,"fp":"Q3","form":"10-Q","filed":"2020-10-29"},{"start":"2020-07-01","end":"2020-09-30","val":-0.06,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23","frame":"CY2020Q3"},{"start":"2020-01-01","end":"2020-12-31","val":-0.42,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23","frame":"CY2020"},{"start":"2020-10-01","end":"2020-12-31","val":-0.02,"accn":"0001660280-21-000027","fy":2020,"fp":"FY","form":"10-K","filed":"2021-02-23","frame":"CY2020Q4"},{"start":"2021-01-01","end":"2021-03-31","val":-0.07,"accn":"0001660280-21-000054","fy":2021,"fp":"Q1","form":"10-Q","filed":"2021-04-29","frame":"CY2021Q1"}]}}