Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Net sales	$ 261,369	$ 234,519	$ 505,538	$ 456,880
Cost of goods sold	160,776	132,791	313,341	266,606
Gross profit	100,593	101,728	192,197	190,274
Selling, general, and administrative expenses	39,745	42,009	82,452	79,203
Technical and research expenses	10,161	9,762	20,050	19,243
Restructuring expenses, net	(28)	(9)	226	43
Operating income	50,715	49,966	89,469	91,785
Interest expense, net	3,933	4,218	7,542	7,787
Other (income)/expense, net	(7,045)	862	(10,973)	1,462
Income before income taxes	53,827	44,886	92,900	82,536
Income tax expense	14,458	13,446	25,456	23,486
Net income	39,369	31,440	67,444	59,050
Net income attributable to the noncontrolling interest	168	43	506	70
Net income attributable to the Company	$ 39,201	$ 31,397	$ 66,938	$ 58,980
Earnings per share attributable to Company shareholders - Basic (in dollars per share)	$ 1.25	$ 0.97	$ 2.12	$ 1.82
Earnings per share attributable to Company shareholders - Diluted (in dollars per share)	$ 1.25	$ 0.97	$ 2.11	$ 1.82
Shares of the Company used in computing earnings per share:
Shares of the Company used in computing earnings per share, basic (in shares)	31,268	32,375	31,571	32,363
Shares of the Company used in computing earnings per share, diluted (in shares)	31,378	32,422	31,668	32,411
Dividends declared per share, Class A and Class B (in dollars per share)	$ 0.21	$ 0.20	$ 0.42	$ 0.40