Registration statement for securities of certain foreign private issuers

Inventories - Summary of Inventories (Detail)

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Inventories - Summary of Inventories (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Inventory, Net [Abstract]    
Raw materials $ 1,657 $ 919
Finished goods including machinery 507 422
Total $ 2,164 $ 1,341