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Income taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Contingency [Line Items] |  |  |
Cumulative unremitted earnings, non-permanently reinvested | $ 1,400,000 |  |
Cumulative unremitted earnings, permanently reinvested | $ 300,000 |  |
Effective income tax rate, total | 17.60% | 18.60% | 13.30%
Realized net benefit as result of reducing our reserves with respect to uncertain tax positions | $ 2,300 | $ 2,000 | $ 800
Tax effect, carry forwards | 114,100 |  |
Deferred tax assets, valuation allowance | 95,747 | 91,531 |
Unrecognized tax benefits that would impact effective tax rate | 1,300 |  |
Unrecognized tax benefits, interest (benefit) expense | 100 | 200 | 200
Unrecognized tax benefits, penalties | (600) | (200) | $ (300)
Unrecognized tax benefits, interest (benefit) expense accrued | 400 | 600 |
Unrecognized tax benefits, penalties accrued | 1,000 | $ 1,500 |
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 | 700 |  |
No Expiration Date |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax effect, carry forwards | 21,200 |  |
After 2020 but before the end of 2025 |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax effect, carry forwards | 6,600 |  |
After 2025 |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax effect, carry forwards | $ 86,300 |  |

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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible tax carryforwards, classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-6 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482685/740-10-50-8 + Details
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