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Business combinations - Summary of Intangible Assets Acquired (Detail) - ReliefFromRoyalties [Member] - Intellectual Property [Member] - Escuela De Internet [Member]
$ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
Schedule Of Intangible Assets Acquired [Line Items]  
Estimated Fair Value in thousands of U.S. dollars $ 729
Estimated useful life in years 5 years