Inventory - Summary of Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 1,851	$ 966
Goods in process	842	1,921
Finished goods	4,234	4,410
Inventories	$ 6,927	$ 7,297

Inventory goods ion process current and non current.

No definition available.

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