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Inventories (Tables)
 12 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Schedule of Inventory
Inventories consist of the following:
 
 
December 31, 2017
 
December 31, 2016
Raw materials
 
$
36,328

 
$
36,760

Finished goods
 
17,458

 
15,126

Inventories, net
 
$
53,786

 
$
51,886

Service and sales demonstration inventory, net
 
$
39,614

 
$
29,136