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Segment and Geographic Information (Tables)
6 Months Ended
Jun. 30, 2015
Segment Reporting [Abstract]  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
The Company operates a single segment business for product sales consisting of four geographical sales territories as follows:
 
 
 
Three months ended June 30,
 
Six months ended June 30,
 
 
 
2015
 
2014
 
2015
 
2014
 
Colombia
 
$
21,869
 
$
21,797
 
$
39,251
 
$
42,752
 
United States
 
 
33,344
 
 
26,041
 
 
65,022
 
 
47,908
 
Panama
 
 
1,355
 
 
3,418
 
 
2,823
 
 
7,833
 
Other
 
 
1,485
 
 
680
 
 
3,000
 
 
1,284
 
Total Revenues
 
$
58,053
 
$
51,936
 
$
110,096
 
$
99,777