Total Assets by Reportable Segments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
ASSETS
Total segment assets	$ 207,696	$ 188,719
Cash and cash equivalents	78,944	82,043	$ 100,057	$ 68,108
Prepaid income taxes and income taxes receivable	5,905	1,852
Prepaid expenses and other current assets	11,967	9,155
Property, plant and equipment, net	77,556	65,464
Operating lease assets	35,180
Deferred tax assets	8,890	9,492
Other assets	2,713	2,269
Intangible assets, net	166,175	142,920
Goodwill	274,710	217,662
Total assets	$ 869,736	$ 719,576