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INVENTORY VALUATION
6 Months Ended
Jun. 30, 2018
Inventory Disclosure [Abstract]  
INVENTORY VALUATION
INVENTORY
Inventories in the Condensed Consolidated Balance Sheet is comprised of the following components:
 
June 30, 2018
 
December 31, 2017
Raw materials
$
106,464

 
$
97,577

Work-in-process
52,827

 
50,695

Finished goods
206,343

 
200,395

Total
$
365,634

 
$
348,667


At June 30, 2018 and December 31, 2017, approximately 37% and 32% of total inventories were valued using the last-in, first out ("LIFO") method, respectively. The excess of current cost over LIFO cost was $74,814 at June 30, 2018 and $68,641 at December 31, 2017.