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Investment Properties - Fair Value of Investment Properties (Detail) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about investment property [Line Items]      
Investment properties $ 5,809 $ 6,378 $ 730
Land [Member]      
Disclosure of detailed information about investment property [Line Items]      
Investment properties 418 466  
Office buildings for rent [Member]      
Disclosure of detailed information about investment property [Line Items]      
Investment properties 200 240  
Warehouse      
Disclosure of detailed information about investment property [Line Items]      
Investment properties 5,096 5,577  
Land leasehold right [Member]      
Disclosure of detailed information about investment property [Line Items]      
Investment properties 95 95  
Fair value [Member] | Land [Member]      
Disclosure of detailed information about investment property [Line Items]      
Investment properties 10,528 11,521  
Fair value [Member] | Office buildings for rent [Member]      
Disclosure of detailed information about investment property [Line Items]      
Investment properties 2,444 2,060  
Fair value [Member] | Warehouse      
Disclosure of detailed information about investment property [Line Items]      
Investment properties 5,658 5,701  
Fair value [Member] | Land leasehold right [Member]      
Disclosure of detailed information about investment property [Line Items]      
Investment properties $ 173 $ 96