Schedule of Other Liabilities and Deferred Credits (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Credits and Other Liabilities [Abstract]
Pension liabilities	$ 32,545	$ 33,124
Liability for uncertain tax positions	48,577	43,790
Deferred tax liability	2,571	1,913
Other	14,704	15,198
Other liabilities and deferred credits	$ 98,397	$ 94,025