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v3.25.1

Supplemental Cash Flow Information (Non-Cash) (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Non-cash financing activity: |  |
Excise tax on share repurchases | $ 196 | $ 0

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- Definition Amount of excise tax on share purchased under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481549/505-30-45-1 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Cash Flow, Noncash Financing Activities Disclosure + References No definition available. + Details
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Namespace Prefix: | zd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration