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Investments in Non-Marketable Securities - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Unrealized or realized gains or losses	$ 0	$ 0	$ 0	$ 0

X

- Definition

Non Marketable Debt Securities Without Readily Determinable Fair Value Annual Amount

+ References

No definition available.

+ Details

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Namespace Prefix:	cdxs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration