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Intangible assets and goodwill - Additional Information (Detail)
$ in Thousands
Dec. 31, 2019
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
Estimated amortization expense for intangibles in year 1 $ 2,018
Estimated amortization expense for intangibles in year 2 2,190
Estimated amortization expense for intangibles in year 3 2,350
Estimated amortization expense for intangibles in year 4 1,910
Estimated amortization expense for intangibles in year 5 $ 1,780