XML 93 R81.htm IDEA: XBRL DOCUMENT v3.22.1
Income and Expenses Items - Summary of Other Operating Expenses (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Analysis Of Income And Expense [Abstract]      
Allowance for trade receivables $ 205 $ 124  
Allowance for trade receivables for related parties 15    
Impairment of property, plant, and equipment 7 4 $ 546
Allowance for foreseeable loss     193
Allowance for other receivable     30
Other operating expenses – others   1 1
Total other operating expenses $ 227 $ 129 $ 770