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INVENTORY
12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
INVENTORY
INVENTORY
The valuation of LIFO inventories is made at the end of each year based on inventory levels and costs at that time.  Accordingly, interim LIFO calculations are based on management’s estimates of expected year-end inventory levels and costs.  Actual year-end costs and inventory levels may differ from interim LIFO inventory valuations.  At December 31, 2015 and 2014, approximately 40% of total inventories were valued using the LIFO method. The excess of current cost over LIFO cost was $59,765 at December 31, 2015 and $71,311 at December 31, 2014.