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Note 6 - Property and Equipment
3 Months Ended
Dec. 31, 2016
Notes to Financial Statements  
Property, Plant and Equipment Disclosure [Text Block]
6
. PROPERTY AND EQUIPMENT
 
Property and equipment consisted of the following:
 
 
 
December 31,
 
 
September 30,
 
 
 
2016
 
 
2016
 
Machinery and equipment
  $
955,226
    $
957,829
 
Office furniture and equipment
   
988,922
     
976,856
 
Leasehold improvements
   
76,138
     
71,738
 
Property and equipment, gross
   
2,020,286
     
2,006,423
 
Accumulated depreciation
   
(1,563,763
)    
(1,533,079
)
Property and equipment, net
  $
456,523
    $
473,344
 
 
 
 
Three months ended
 
 
 
December 31,
 
 
 
2016
 
 
2015
 
Depreciation expense
  $
30,684
    $
55,245