Income taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Contingency [Line Items]
Cumulative unremitted earnings, non-permanently reinvested	$ 1,300,000
Cumulative unremitted earnings, permanently reinvested	$ 1,000,000
Effective income tax rate, total	13.30%	6.10%	(35.90%)
Realized net benefit as result of reducing our reserves with respect to uncertain tax positions	$ 800	$ 1,700	$ 100
Tax effect, carry forwards	168,100
Deferred tax assets, valuation allowance	143,177	155,008
Unrecognized tax benefits that would impact effective tax rate	3,800
Unrecognized tax benefits, interest (benefit) expense	200	200	200
Unrecognized tax benefits, penalties	(300)	(500)	$ (100)
Unrecognized tax benefits, interest (benefit) expense accrued	800	700
Unrecognized tax benefits, penalties accrued	1,800	$ 2,100
Minimum
Income Tax Contingency [Line Items]
Unrecognized tax benefits change within next twelve months due to potential for resolution of foreign and U.S. examinations	0
Maximum
Income Tax Contingency [Line Items]
Unrecognized tax benefits change within next twelve months due to potential for resolution of foreign and U.S. examinations	1,100
No Expiration Date
Income Tax Contingency [Line Items]
Tax effect, carry forwards	15,700
After 2020 but before the end of 2025
Income Tax Contingency [Line Items]
Tax effect, carry forwards	19,200
After 2025
Income Tax Contingency [Line Items]
Tax effect, carry forwards	$ 133,200