Other, Net - Other Net in Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Other Nonoperating Income Expense [Abstract]
Foreign exchange gains	$ 568	$ 600
Investment income	75	97
Realized and unrealized gains (losses) on investments	(3,875)	2,404
Net periodic pension benefit (cost)	(30)	44
Other, net	$ (3,262)	$ 3,145

Amount of net periodic benefit cost (credit) for defined benefit plan.

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