Inventories (Tables)

6 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Net components of inventories

The components of inventories are as follows:

	June 30, 2018		December 31, 2017
Finished goods	$	1,446,883	1,326,038
Work in process	156,428		159,921
Raw materials	457,893		462,704
Total inventories	$	2,061,204	1,948,663