Operating Segment Information (Income by Reportable Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Net sales	$ 234,906	$ 191,157	$ 464,171	$ 389,967
Operating income	35,745	21,092	72,938	38,567
Total Americas
Segment Reporting Information [Line Items]
Net sales	67,619	56,139	133,124	122,123
United States
Segment Reporting Information [Line Items]
Net sales	63,843	53,665	126,044	115,836
Other Americas
Segment Reporting Information [Line Items]
Net sales	3,776	2,474	7,080	6,287
Total APAC
Segment Reporting Information [Line Items]
Net sales	109,784	89,610	230,811	174,323
China
Segment Reporting Information [Line Items]
Net sales	78,294	65,883	165,941	117,416
Other APAC
Segment Reporting Information [Line Items]
Net sales	31,490	23,727	64,870	56,907
Total EMEA
Segment Reporting Information [Line Items]
Net sales	57,503	45,408	100,236	93,521
Germany
Segment Reporting Information [Line Items]
Net sales	27,757	23,250	43,330	43,762
Other EMEA
Segment Reporting Information [Line Items]
Net sales	29,746	22,158	56,906	49,759
Advanced Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	140,426	116,160	272,318	227,434
Operating income	18,288	17,070	33,137	21,848
Advanced Electronics Solutions | Total Americas
Segment Reporting Information [Line Items]
Net sales	22,614	23,643	47,005	47,321
Advanced Electronics Solutions | United States
Segment Reporting Information [Line Items]
Net sales	21,824	22,885	45,621	45,510
Advanced Electronics Solutions | Other Americas
Segment Reporting Information [Line Items]
Net sales	790	758	1,384	1,811
Advanced Electronics Solutions | Total APAC
Segment Reporting Information [Line Items]
Net sales	75,273	58,139	157,068	110,751
Advanced Electronics Solutions | China
Segment Reporting Information [Line Items]
Net sales	49,841	44,700	108,264	77,633
Advanced Electronics Solutions | Other APAC
Segment Reporting Information [Line Items]
Net sales	25,432	13,439	48,804	33,118
Advanced Electronics Solutions | Total EMEA
Segment Reporting Information [Line Items]
Net sales	42,539	34,378	68,245	69,362
Advanced Electronics Solutions | Germany
Segment Reporting Information [Line Items]
Net sales	21,651	18,407	26,814	35,136
Advanced Electronics Solutions | Other EMEA
Segment Reporting Information [Line Items]
Net sales	20,888	15,971	41,431	34,226
Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	89,331	71,626	181,180	155,152
Operating income	15,637	2,995	35,714	14,512
Elastomeric Material Solutions | Total Americas
Segment Reporting Information [Line Items]
Net sales	43,481	31,741	83,707	72,757
Elastomeric Material Solutions | United States
Segment Reporting Information [Line Items]
Net sales	40,666	30,073	78,398	68,640
Elastomeric Material Solutions | Other Americas
Segment Reporting Information [Line Items]
Net sales	2,815	1,668	5,309	4,117
Elastomeric Material Solutions | Total APAC
Segment Reporting Information [Line Items]
Net sales	32,837	29,994	69,956	61,322
Elastomeric Material Solutions | China
Segment Reporting Information [Line Items]
Net sales	27,427	20,159	55,258	38,534
Elastomeric Material Solutions | Other APAC
Segment Reporting Information [Line Items]
Net sales	5,410	9,835	14,698	22,788
Elastomeric Material Solutions | Total EMEA
Segment Reporting Information [Line Items]
Net sales	13,013	9,891	27,517	21,073
Elastomeric Material Solutions | Germany
Segment Reporting Information [Line Items]
Net sales	5,889	4,799	16,165	8,433
Elastomeric Material Solutions | Other EMEA
Segment Reporting Information [Line Items]
Net sales	7,124	5,092	11,352	12,640
Other
Segment Reporting Information [Line Items]
Net sales	5,149	3,371	10,673	7,381
Operating income	1,820	1,027	4,087	2,207
Other | Total Americas
Segment Reporting Information [Line Items]
Net sales	1,524	755	2,412	2,045
Other | United States
Segment Reporting Information [Line Items]
Net sales	1,353	707	2,025	1,686
Other | Other Americas
Segment Reporting Information [Line Items]
Net sales	171	48	387	359
Other | Total APAC
Segment Reporting Information [Line Items]
Net sales	1,674	1,477	3,787	2,250
Other | China
Segment Reporting Information [Line Items]
Net sales	1,026	1,024	2,419	1,249
Other | Other APAC
Segment Reporting Information [Line Items]
Net sales	648	453	1,368	1,001
Other | Total EMEA
Segment Reporting Information [Line Items]
Net sales	1,951	1,139	4,474	3,086
Other | Germany
Segment Reporting Information [Line Items]
Net sales	217	44	351	193
Other | Other EMEA
Segment Reporting Information [Line Items]
Net sales	1,734	1,095	4,123	2,893
Recognized over time
Segment Reporting Information [Line Items]
Net sales	65,767	50,804	128,480	103,682
Recognized over time | Advanced Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	57,248	45,060	112,062	91,461
Recognized over time | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	3,758	2,667	6,445	5,494
Recognized over time | Other
Segment Reporting Information [Line Items]
Net sales	4,761	3,077	9,973	6,727
Recognized at a point in time
Segment Reporting Information [Line Items]
Net sales	169,139	140,353	335,691	286,285
Recognized at a point in time | Advanced Electronics Solutions
Segment Reporting Information [Line Items]
Net sales	83,178	71,100	160,256	135,973
Recognized at a point in time | Elastomeric Material Solutions
Segment Reporting Information [Line Items]
Net sales	85,573	68,959	174,735	149,658
Recognized at a point in time | Other
Segment Reporting Information [Line Items]
Net sales	$ 388	$ 294	$ 700	$ 654