Discontinued Operations - Assets and Liabilities Held for Sale (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 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	$ 38,762	$ 0	$ 77,905
Discontinued Operations \| J2 Global
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues		87,751		174,279
Cost of revenues		(14,554)		(28,524)
Sales and marketing		(13,681)		(26,916)
Research, development and engineering		(1,940)		(3,616)
General and administrative		(5,977)		(12,025)
Interest expense and other		(351)		(199)
Income before income taxes		51,248		102,999
Income tax expense		12,486		25,094
Income from discontinued operations, net of income taxes		$ 38,762		$ 77,905

Amount before tax of income (loss) from a discontinued operation. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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