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Inventories
6 Months Ended
Jun. 30, 2015
Inventory Disclosure [Abstract]  
Inventories
C) Inventories. Inventories are stated at the lower of cost or net realizable value with cost being determined by the first-in, first-out (“FIFO”) method. Inventory balances at June 30, 2015 and December 31, 2014 were immaterial and consisted of spare parts.