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Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2019
Accounting Policies [Abstract]  
Schedule of inventory valuation
   March 31,   December 31, 
   2019   2018 
   (unaudited)     
Raw Materials  $4,445,000   $4,622,000 
Work In Progress   18,290,000    17,530,000 
Finished Goods   10,095,000    10,915,000 
Inventory Reserve   (4,143,000)   (4,016,000)
Total Inventory  $28,687,000   $29,051,000 
Schedule of credit and concentration risks
Customer  Percentage of Sales
   March 2019  March 2018
   (Unaudited)  (Unaudited)
1  31.4  34.5
2  28.8  28.6
3  13.6  10.0

  

Customer   Percentage of Receivables 
    March 2019   December 2018 
    (Unaudited)     
1    35.5    38.3 
2    21.5    26.2
Schedule of earnings per share
   Three Months Ended 
   March 31, 2019  March 31, 2018 
   (Unaudited)   (Unaudited) 
Weighted average shares outstanding used to compute basic earnings per share   28,601,390    26,116,262 
Effect of dilutive stock options and warrants        
Weighted average shares outstanding and dilutive securities used to compute dilutive earnings per share   28,601,390    26,116,262
Schedule of anti-dilutive securities

   Three Months Ended 
   March 31, 2019   March 31, 2018 
   (Unaudited)   (Unaudited) 
Stock Options   861,000    354,000 
Warrants   2,240,000    1,480,000 
    3,101,000    1,834,000 

 

   Three Months Ended 
   March 31, 2019   March 31, 2018 
   (Unaudited)   (Unaudited) 
Convertible Preferred Stock        
Stock Options   500,000    695,000 
Warrants       480,000 
    500,000    1,175,000