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Segment Information (Tables)
6 Months Ended
Jun. 30, 2016
Segment Reporting [Abstract]  
Schedule of Revenue by Country

Revenue by country for the three-month and six-month periods ended June 30, 2016 and 2015 was as follows:

 

    Three Months Ended June 30,     Six Months Ended June 30,  
    2016     2015     2016     2015  
United States   $ 365,600     $ 616,800     $ 787,200     $ 1,368,300  
Brazil     155,300       246,100       295,200       415,600  
Other countries     437,700       495,900       883,500       1,046,000  
    $ 958,600     $ 1,358,800     $ 1,965,900     $ 2,829,900