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Inventory - Summary of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Inventory Disclosure [Abstract]
Raw materials	$ 420	$ 289
Finished goods	865	615
Inventories	$ 1,285	$ 904

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- Definition

Inventory current and non current net.

+ References

No definition available.

+ Details

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- Definition

Inventory finished goods current and non-current.

+ References

No definition available.

+ Details

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Namespace Prefix:	rkda_
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- Definition

Inventory raw materials current and non-current.

+ References

No definition available.

+ Details

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Namespace Prefix:	rkda_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

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