Other, Net - Other Net in Condensed Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Other Nonoperating Income Expense [Abstract]
Foreign exchange (losses) gains	$ (335)	$ 568
Investment income	306	75
Realized and unrealized gains (losses) on investments	534	(3,875)
Net periodic pension benefit	241	(30)
Other, net	$ 746	$ (3,262)

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

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

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