Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Summary of Fair Value Hierarchy of Company's Financial Assets and Financial Liabilities (Detail)

v3.21.2
Financial Instruments - Summary of Fair Value Hierarchy of Company's Financial Assets and Financial Liabilities (Detail) - Fair Value, Recurring - USD ($)
Sep. 30, 2021
Dec. 31, 2020
Derivative Financial Instruments, Liabilities [Member]    
Financial Liabilities    
Derivative liabilities $ 315 $ 245
Derivative Financial Instruments, Liabilities [Member] | Level 3 [Member]    
Financial Liabilities    
Derivative liabilities 315 245
Other Long-term Investments [Member]    
Financial Assets    
Long term investments - other [1] 592 512
Other Long-term Investments [Member] | Level 1 [Member]    
Financial Assets    
Long term investments - other [1] $ 592 $ 512
[1] Long-term investments – other are included in the investments balance on the unaudited interim condensed consolidated balance sheets.