Fair value measurement - Financial assets and liabilities carried at fair value measured on recurring basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments in marketable securities	$ 19,186	$ 12,617
Derivative assets	33,291	21,858
Derivative liabilities	1,140	35,995
Contingent consideration liabilities	9,814	36,633
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments in marketable securities	19,186	12,617
Derivative assets	0	0
Derivative liabilities	0	0
Contingent consideration liabilities	0	0
Significant Observable Inputs (Level 2)
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments in marketable securities	0	0
Derivative assets	33,291	21,858
Derivative liabilities	1,140	35,995
Contingent consideration liabilities	0	0
Significant Unobservable Inputs (Level 3)
Fair Value Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments in marketable securities	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Contingent consideration liabilities	$ 9,814	$ 36,633