Financial Information by Segment - Schedule of Segment Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Net sales from external customers	$ 336,007	$ 384,714
Adjusted EBITDA	63,844	64,567
Corporate charges	(2,323)	(5,636)
Depreciation and amortization of intangible assets and property, plant and equipment	(23,845)	(24,095)
Excluding equity in earnings of affiliated companies, net of tax	(133)	(137)
Income from operations before income tax expense and finance costs	37,543	34,699
Interest and other financial expense, net	(9,610)	(6,443)
Reclassification of actuarial losses from AOCI	(2,398)	0
Income tax expense	(7,635)	(9,439)
Equity in earnings of affiliated companies, net of tax	133	137
Net income	18,032	18,954
Operating segments | Rubber
Segment Reporting Information [Line Items]
Net sales from external customers	216,228	253,128
Adjusted EBITDA	35,768	35,165
Depreciation and amortization of intangible assets and property, plant and equipment	(15,293)	(13,765)
Excluding equity in earnings of affiliated companies, net of tax	(133)	(137)
Income from operations before income tax expense and finance costs	20,342	21,263
Equity in earnings of affiliated companies, net of tax	133	137
Operating segments | Specialties
Segment Reporting Information [Line Items]
Net sales from external customers	119,779	131,586
Adjusted EBITDA	28,076	29,402
Depreciation and amortization of intangible assets and property, plant and equipment	(8,552)	(10,330)
Income from operations before income tax expense and finance costs	19,524	19,072
Corporate
Segment Reporting Information [Line Items]
Corporate charges	(2,323)	(5,636)
Income from operations before income tax expense and finance costs	(2,323)	(5,636)
Interest and other financial expense, net	(9,610)	(6,443)
Reclassification of actuarial losses from AOCI	(2,398)
Income tax expense	$ (7,635)	$ (9,439)