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Leases - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended	6 Months Ended
	May 31, 2022	Jun. 30, 2022	Jun. 30, 2022
Lessee Lease Description [Line Items]
Operating lease term, expiration	2024-05
Early termination fees		$ 47,000
Existence of option to extend			true
Lease option to extend, description			Some leases (the Davis office, a warehouse, and a copy machine) include one or more options to renew, with renewal terms that can extend the lease term from one to six years.
Minimum [Member]
Lessee Lease Description [Line Items]
Option to extend lease, term		1 year	1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Option to extend lease, term		6 years	6 years

X

- Definition

Operating lease term expiration month and year.

+ References

No definition available.

+ Details

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Namespace Prefix:	rkda_
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Balance Type:	na
Period Type:	duration

X

- Definition

Payments for termination fees.

+ References

No definition available.

+ Details

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Namespace Prefix:	rkda_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_LesseeLeaseDescriptionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Indicates (true false) whether lessee has option to extend operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

+ Details

Name:	us-gaap_LesseeOperatingLeaseExistenceOfOptionToExtend
Namespace Prefix:	us-gaap_
Data Type:	xbrli:booleanItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Description of terms and conditions of option to extend lessee's operating lease. Includes, but is not limited to, information about option recognized as part of right-of-use asset and lease liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

+ Details

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

X

- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
Period Type:	instant

X

- Details

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Namespace Prefix:
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- Details

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