Annual report pursuant to Section 13 and 15(d)

Note A - Summary of Significant Accounting Policies (Tables)

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Note A - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Sep. 30, 2015
Useful Lives [Member]  
Notes Tables  
Property, Plant and Equipment [Table Text Block]
 
Years
 
Equipment 3 - 7  
Leasehold improvements 7 - 10 or life of lease  
Vehicles   3    
Investments Classified by Contractual Maturity Date [Table Text Block]
    September 30,
2015
  September 30,
2014
Less than one year   $ 7,925,000     $ 6,632,000  
1-3 years     8,290,000       8,302,000  
Total   $ 16,215,000     $ 14,934,000  
Allowance for Credit Losses on Financing Receivables [Table Text Block]
Year Ended   Balance at
Beginning of
Year
  Additions
Charged to
Costs and
Expenses
  Less
Write-offs
  Balance
at End
of Year
September 30, 2015   $ 97,950     $ -     $ (18,477 )   $ 79,473  
September 30, 2014     97,950       -       -       97,950  
September 30, 2013     97,950       -       -       97,950  
Schedule of Inventory, Current [Table Text Block]
    September 30,
2015
  September 30,
2014
         
Raw materials   $ 4,811,993     $ 3,729,160  
Work-in-process     310,149       292,557  
Finished goods     2,060,712       1,368,625  
    $ 7,182,854     $ 5,390,342  
Property, Plant and Equipment [Table Text Block]
    September 30,
2015
  September 30,
2014
                 
Manufacturing Equipment   $ 4,102,868     $ 3,057,665  
Office Equipment     2,655,088       1,985,409  
Leasehold Improvements     2,414,133       320,218  
Vehicles     193,702       192,321  
      9,365,791       5,555,613  
Less accumulated depreciation     3,676,118       3,093,363  
    $ 5,689,673     $ 2,462,250  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
Year ended September 30,   2015   2014   2013
Net income   $ 4,682,008     $ 5,432,851     $ 4,733,844  
Weighted average common shares     13,216,010       12,916,273       12,527,153  
Dilutive potential common shares     371,522       685,321       551,786  
Weighted average dilutive common shares outstanding     13,587,532       13,601,594       13,078,939  
Earnings per share:                        
Basic   $ 0.35     $ 0.42     $ 0.38  
Diluted   $ 0.34     $ 0.40     $ 0.36