Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Schedule of inventory

Inventories consist of the following:

	March 31, 2018		December 31, 2017
Raw materials	$	42,094	$	41,844
Work-in-process	15,300		14,666
Finished goods	88,393		84,926
Total	$	145,787	$	141,436