Pensions - Amounts Recognized in Balance Sheet (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
UNITED STATES | Accrued Liabilities [Member]
Amounts recognized in the balance sheet:
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	$ (1,686)	$ (1,830)
UNITED STATES | Pension Benefits Long Term [Member]
Amounts recognized in the balance sheet:
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(20,750)	(23,803)
Foreign Plan [Member] | Accrued Liabilities [Member]
Amounts recognized in the balance sheet:
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(840)	(648)
Foreign Plan [Member] | Pension Benefits Long Term [Member]
Amounts recognized in the balance sheet:
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(23,109)	(21,333)
Pension Plan [Member] | UNITED STATES | Accrued Liabilities [Member]
Amounts recognized in the balance sheet:
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(1,021)	(1,011)
Pension Plan [Member] | UNITED STATES | Pension Benefits Long Term [Member]
Amounts recognized in the balance sheet:
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(12,978)	(22,717)
Pension Plan [Member] | UNITED STATES | Other assets [Member]
Amounts recognized in the balance sheet:
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	2,677	524
Pension Plan [Member] | Foreign Plan [Member] | Accrued Liabilities [Member]
Amounts recognized in the balance sheet:
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(4,413)	(4,643)
Pension Plan [Member] | Foreign Plan [Member] | Pension Benefits Long Term [Member]
Amounts recognized in the balance sheet:
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	(127,032)	(131,948)
Pension Plan [Member] | Foreign Plan [Member] | Other assets [Member]
Amounts recognized in the balance sheet:
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position	$ 1,887	$ 433