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Inventories
6 Months Ended
Jun. 30, 2013
Inventory Disclosure [Abstract]  
Inventories
Inventories
Approximately eighty percent of the Company’s inventories are valued at the lower of LIFO cost or market. Final inventory determination under the LIFO costing method is made at the end of each fiscal year based on the actual inventory levels and costs at that time. Interim LIFO determinations, including those at June 30, 2013, are based on management’s estimates of future inventory levels and costs for the balance of the current fiscal year. The Company values its LIFO increments using the cost of its latest purchases during the periods reported.
Current replacement cost of inventories exceeded book value by $137,147 and $139,940 at June 30, 2013 and December 31, 2012, respectively. Income taxes would become payable on any realization of this excess from reductions in the level of inventories.