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(6) Inventories (Tables)
3 Months Ended
Mar. 31, 2018
Inventory Disclosure [Abstract]  
Inventories
    March 31,      December 30,  
     2018      2017  
               
Raw materials  $701,681   $478,567 
Work in process   1,644,459    1,003,285 
Finished goods   1,052,254    1,014,023 
  
Gross inventory   3,398,394    2,495,875 
Reserve for obsolescence   (386,362)   (386,362)
           
Inventories, net  $3,012,032   $2,109,513