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Income Taxes - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Income tax holiday amount									$ 21,000	$ 24,000	$ 28,000
Income tax holiday per share benefit									$ 0.33	$ 0.35	$ 0.36
Effective income tax rate									14.60%	12.70%	13.00%
Statutory tax rate									21.00%
Valuation Allowance	$ 60,101				$ 51,221				$ 60,101	$ 51,221	$ 51,221	$ 53,893	$ 62,098
Deferred Tax Assets, Net of Valuation Allowance	104,798				99,901				104,798	99,901
Incremental income tax provision	38,940	$ 23,668	$ 22,434	$ 4,301	$ 23,719	$ 26,605	$ 27,325	$ 8,392	89,343	86,041	88,352
Provision for income tax repatriation of earnings									3,000	3,000	4,000
Gross unrecognized tax benefit would impact the Company's effective tax rate	29,000								29,000
GILTI Tax [Member]
Income Taxes [Line Items]
Incremental income tax provision									13,000	11,000	14,000
Foreign Currency Translation Adjustment [Member]
Income Taxes [Line Items]
Incremental income tax provision										$ 9,000	8,000
Stock Based Compensation Tax Benefit [Member]
Income Taxes [Line Items]
Incremental income tax provision									7,000		9,000
Foreign Net Operating Losses and credits [Member]
Income Taxes [Line Items]
Valuation Allowance	55,000								55,000
Gross foreign net operating losses	249,000								249,000
Deferred Tax Assets, Net of Valuation Allowance	7,000								7,000
Deferred Tax Assets Operating Loss Carryforwards Foreign Not Subject To Expiration	230,000								230,000
Deferred Tax Assets Operating Loss Carryforwards Foreign Subject To Expiration	19,000								19,000
2017 Tax Act [Member]
Income Taxes [Line Items]
Incremental income tax provision											$ 6,000
Maximum [Member]
Income Taxes [Line Items]
Expected change in unrecognized tax benefits in the next twelve months	$ 1,000								$ 1,000
United States [Member]
Income Taxes [Line Items]
Statutory tax rate									21.00%
Ireland [Member]
Income Taxes [Line Items]
Statutory tax rate									12.50%
U.K [Member]
Income Taxes [Line Items]
Statutory tax rate									19.00%
Singapore [Member]
Income Taxes [Line Items]
Statutory tax rate									17.00%
Singapore [Member] \| April Two Thousand And Twenty One To March Two Thousand And Twenty Six [Member] \| New Contractual Arrangement [Member]
Income Taxes [Line Items]
Statutory tax rate				5.00%
Singapore [Member] \| Contractual Tax Rate Singapore [Member]
Income Taxes [Line Items]
Marginal effective income tax rate									0.00%