CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 971,171	$ 932,886	$ 802,583
Cost of sales	650,156	583,747	510,763
Gross margin	321,015	349,139	291,820
Selling, general and administrative expenses	218,828	193,153	182,283
Research and development expenses	35,207	29,904	29,320
Restructuring and impairment charges	66,562	3,570	12,987
Other operating (income) expense, net	(144,014)	5,330	(104)
Operating income	144,432	117,182	67,334
Equity income in unconsolidated joint ventures	4,437	7,032	4,877
Pension settlement charges	0	(534)	(55)
Other income (expense), net	1,058	5,136	3,513
Interest expense, net	(9,547)	(2,536)	(7,135)
Income before income tax expense	140,380	126,280	68,534
Income tax expense	23,751	18,147	18,544
Net income	$ 116,629	$ 108,133	$ 49,990
Basic earnings per share (in dollars per share)	$ 6.21	$ 5.77	$ 2.68
Diluted earnings per share (in dollars per share)	$ 6.15	$ 5.73	$ 2.67
Shares used in computing:
Basic earnings per share (in shares)	18,784	18,731	18,681
Diluted earnings per share (in shares)	18,953	18,863	18,706