Other, Net - Other Net in Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other Nonoperating Income Expense [Abstract]
Foreign exchange gains	$ 501	$ 1,367	$ 123
Investment income	2,886	1,681	968
Realized and unrealized gains on investments	2,289	3,143	3,955
Net periodic benefit cost	302	(874)	(351)
Other retirement obligation	559	(363)	(694)
Gain on sale of asset			570
Gain on dissolution of the China joint venture	972
Other, net	$ 7,509	$ 4,954	$ 4,571