Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Oct. 07, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Income from continuing operations		$ 121,174	$ 122,413	$ 178,883
Net income available to participating securities, basic		(359)	0	0
Net income available to participating securities, diluted		(359)	0	0
Net income available to common shareholders from continuing operations		120,815	122,413	178,883
Net income available to common shareholders from continuing operations		$ 120,815	$ 122,413	$ 178,883
Denominator:
Weighted-average outstanding shares of common stock (in shares)		19,904,237	19,902,924	19,902,924
Dilutive effect of:
Common stock and common stock equivalents (in shares)		19,986,889	19,902,924	19,902,924
Net income per share from continuing operations:
Basic (in dollars per share)		$ 6.07	$ 6.15	$ 8.99
Diluted (in dollars per share)		$ 6.04	$ 6.15	$ 8.99
Anti-dilutive shares were excluded from earnings per share calculation (in shares)		191,076
J2 Global, Inc. | Ziff Davis, Inc.
Net income per share from continuing operations:
Separation and distribution agreement, number of shares distributed (in shares)	19,902,924
Equity incentive plans
Dilutive effect of:
Equity incentive plans (in shares)		71,000	0	0
Employee Stock Purchase Plan
Dilutive effect of:
Equity incentive plans (in shares)		11,652	0	0