Business Combination, Goodwill and Intangible Assets - Schedule of Carrying Value of Goodwill by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 55,546	$ 58,180
Addition Goodwill recorded in SN2A acquisition	23,014
Foreign currency impact	(1,220)	(2,634)
Goodwill, Ending Balance	77,341	55,546
Rubber
Goodwill [Roll Forward]
Goodwill, Beginning Balance	31,550	33,037
Foreign currency impact	(595)	(1,487)
Goodwill, Ending Balance	30,955	31,550
Specialty
Goodwill [Roll Forward]
Goodwill, Beginning Balance	23,996	25,143
Addition Goodwill recorded in SN2A acquisition	23,014
Foreign currency impact	(624)	(1,147)
Goodwill, Ending Balance	$ 46,385	$ 23,996