XML 30 R19.htm IDEA: XBRL DOCUMENT v3.7.0.1
4. SUPPLEMENTAL CASH FLOW INFORMATION (Tables)
 3 Months Ended
Jun. 30, 2017
Supplemental Cash Flow Elements [Abstract]  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
Supplemental cash flow information is as follows:

   
Six Months Ended
   
June 30,
   
2017
  
2016
         
Supplemental cash flow information:            
Interest   $174,202    $256,979 
Federal, state and local income taxes, net of refunds   $553,123    $1,042,711 
             
Non-cash information:            
Fixed asset purchases in accounts payable   $779,257    $450,881