Discontinued Operations and Dispositions - Assets and Liabilities Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations, net of income taxes	$ 0	$ 35,800	$ 0	$ 113,705
Discontinued Operations | J2 Global
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		89,107		263,386
Cost of revenues		(14,605)		(43,129)
Sales and marketing		(13,116)		(40,032)
Research, development and engineering		(2,019)		(5,635)
General and administrative		(8,237)		(20,262)
Interest expense and other		(3,818)		(4,017)
Income before income taxes		47,312		150,311
Income tax expense		(11,512)		(36,606)
Income from discontinued operations, net of income taxes		$ 35,800		$ 113,705