Defined Contribution Plan, Pension and Other Post-Retirement Benefit Plans - Amounts Recognized Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Postretirement Benefit Plans | U.S. Pension and Other Post-Retirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 10,937	$ 14,767	$ 13,765
Prior service cost	45	51	57
Amount recognized in AOCI	10,982	14,818	13,822
Pension Plans | Non-U.S. Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	13,783	12,972	13,454
Prior service cost	747	788	0
Amount recognized in AOCI	$ 14,530	$ 13,760	$ 13,454