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Significant Accounting Policies - Summary of Foreign Exchange Rates (Detail)
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Pesos [Member]      
Disclosure of foreign exchange rates [line items]      
Closing 19.89 18.9200 19.6500
Average 21.5766 19.3500 19.2583
Euro [member]      
Disclosure of foreign exchange rates [line items]      
Closing 0.8183 0.8917 0.8727
Average 0.8736 0.8941 0.8483
Pounds [member]      
Disclosure of foreign exchange rates [line items]      
Closing 0.7313 0.7550 0.7843
Average 0.7758 0.7831 0.7521
Colombian Peso [member]      
Disclosure of foreign exchange rates [line items]      
Closing 3,433 3,277 3,250
Average 3,730 3,300 2,972
Philippine pesos [member]      
Disclosure of foreign exchange rates [line items]      
Closing 48.0230 50.6350 52.5800
Average 49.4944 51.5650 52.6925