Inventories (Tables)

9 Months Ended

Sep. 30, 2018

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories consist of the following:

	September 30, 2018		December 31, 2017
Finished goods	$	51,551	$	47,613
Work in process	42,854		35,455
Raw materials and supplies	88,338		87,128
	$	182,743	$	170,196