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Note 6 - Property and Equipment
9 Months Ended
Jun. 30, 2017
Notes to Financial Statements  
Property, Plant and Equipment Disclosure [Text Block]
6
. PROPERTY AND EQUIPMENT
 
Property and equipment consisted of the following:
 
 
 
 
June 30,
 
 
September 30,
 
 
 
2017
 
 
2016
 
Office furniture and equipment
  $
1,104,417
    $
976,856
 
Machinery and equipment
   
995,616
     
957,829
 
Leasehold improvements
   
76,138
     
71,738
 
Property and equipment, gross
   
2,176,171
     
2,006,423
 
Accumulated depreciation
   
(1,619,349
)    
(1,533,079
)
Property and equipment, net
  $
556,822
    $
473,344
 
 
 
 
Nine months ended
 
 
 
June 30,
 
 
 
2017
 
 
2016
 
Depreciation expense
  $
88,257
    $
128,833