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Principal Activities and Corporate Information - Additional Information (Detail) - USD ($)
10 Months Ended
Aug. 13, 2014
Jun. 30, 2013
Dec. 31, 2020
Dec. 31, 2019
Disclosure corporate information [Line Items]        
Number of shares repurchased under share capital repurchase program   (11,100)    
Total consideration for shares repurchased under share capital repurchase program   $ 38,000    
Financial liabilities recognized $ 0   $ 54,105,000 $ 34,350,000
Top of range [Member]        
Disclosure corporate information [Line Items]        
Monetary amount of common shares authorized to repurchase under share capital repurchase program $ 1,000,000      
Pacific Electric Wire & Cable Co., Ltd. [Member]        
Disclosure corporate information [Line Items]        
Percentage of equity interest held by the ultimate parent company     75.50%