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Other Expenses, Net (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Other Expenses, Net [Abstract]        
Interest income $ (4,461) $ (3,912) $ (10,634) $ (11,607)
Interest expense 15,084 14,514 41,039 44,148
Other 4,488 644 (3,346) 6,092
Other expenses, net $ 15,111 $ 11,246 $ 27,059 $ 38,633