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Major Customers (Tables)
12 Months Ended
Dec. 31, 2016
Major Customers Disclosure [Abstract]  
Schedule of Sales by Major Customers
from unaffiliated customers who represent 10% or more of the Company’s revenues in any one year were as follows: 
  
 
 
 
 
 
Years Ended December 31,
Customer
 
Revenue Type
 
Segment(s)
 
2016
 
2015
 
2014
A
 
Equipment sales
 
EC
 
21%
 
3%
 
—%
B
 
Equipment sales, Consulting services
 
EC
 
14%
 
16%
 
37%
C
 
Equipment sales, Consulting services, Other
 
EC
 
1%
 
2%
 
24%
D
 
Consulting services
 
EC
 
—%
 
11%
 
8%
E
 
Equipment sales
 
EC
 
—%
 
15%
 
—%