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Commitments and Contingencies - Additional Information (Details) | 9 Months Ended
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Sep. 30, 2024 USD ($)
Commitments and Contingencies Disclosure [Abstract] |
Office space noncancelable operating lease expiration date | 2026
Loss related to indemnification obligations | $ 0

X
- Definition Noncancelable operating lease expiration date. + References No definition available. + Details
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Namespace Prefix: | cadl_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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- Definition The amount of loss pertaining to the specified contingency that was charged against earnings in the period, including the effects of revisions in previously reported estimates. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 450 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483076/450-20-50-1 + Details
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