v3.8.0.1
Inventories (Tables)
12 Months Ended
Dec. 31, 2017
Inventories [Abstract]  
Schedule of inventories
  2017 2016
Raw materials $19,342  $25,712 
Finished goods  1,165   2,337 
Reserve for obsolete inventory  (1,850)  (2,773)
Inventories $18,657  $25,276