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Warrants and Options - Summary of Warrants Issued to Purchase Common Stock (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2023
January 2021 Service and Performance Warrants [Member]
Class of Warrant or Right [Line Items]
Warrants expiration date	Dec. 31, 2023
March 2020 Service and Performance Warrants [Member]
Class of Warrant or Right [Line Items]
Warrants expiration date	Dec. 31, 2023
March 2018 Placement Agent Warrants [Member]
Class of Warrant or Right [Line Items]
Warrants expiration date	Dec. 31, 2023
March 2018 Warrants [Member]
Class of Warrant or Right [Line Items]
Warrants expiration date	Dec. 31, 2023

X

- Definition

Warrants expiration date.

+ References

No definition available.

+ Details

Name:	rkda_WarrantsExpirationDate
Namespace Prefix:	rkda_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=rkda_JanuaryTwoThousandTwentyOneServiceAndPerformanceWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=rkda_March2020ServiceAndPerformanceWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=rkda_March2018PlacementAgentWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=rkda_MarchTwoThousandEighteenWarrantsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: