Discontinued Operations and Dispositions - Key Components of Income From Discontinued Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) income from discontinued operations, net of income taxes	$ 0	$ (1,709)	$ 95,319
Discontinued Operations | J2 Global
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		0	270,248
Direct costs		0	(44,306)
Sales and marketing		0	(40,980)
Research, development and engineering		0	(5,814)
General, administrative, and other related costs		0	(39,279)
Interest expense and other		0	(13,856)
Income before income taxes		0	126,013
Income tax expense		(1,709)	(30,694)
(Loss) income from discontinued operations, net of income taxes		$ (1,709)	$ 95,319