Pension and Other Postretirement Benefits - Schedule of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Pension Plan [Member] | U.S. [Member]
Accumulated other comprehensive loss:
Net actuarial loss (gain)	$ 57,883	$ 45,041
Prior service cost (credit)	79	91
Total accumulated other comprehensive loss	57,962	45,132
Defined Benefit Pension Plan [Member] | Foreign Pension Benefits [Member]
Accumulated other comprehensive loss:
Net actuarial loss (gain)	19,673	22,149
Prior service cost (credit)	(7,371)	(7,402)
Total accumulated other comprehensive loss	12,302	14,747
Other Postretirement Benefit Plans [Member]
Accumulated other comprehensive loss:
Net actuarial loss (gain)	(538)	(2,123)
Prior service cost (credit)	(7,850)	(12,202)
Total accumulated other comprehensive loss	$ (8,388)	$ (14,325)