Note A - Summary Of Significant Accounting Policies (Tables)
|
12 Months Ended |
Sep. 30, 2012
|
Investments Classified by Contractual Maturity Date [Table Text Block] |
Less
than one year
|
|
$
|
9,107,000
|
|
1-3
years
|
|
|
4,572,000
|
|
Total
|
|
$
|
13,679,000
|
|
|
Summary of Valuation Allowance [Table Text Block] |
|
|
Balance
at
Beginning
of
Period
|
|
|
Charged
to
Cost
and
Expenses
|
|
|
Deductions
|
|
|
Balance
at
End
of
Period
|
|
September
30, 2012
|
|
$
|
97,950
|
|
|
$
|
-
|
|
|
$
|
-
|
|
|
$
|
97,950
|
|
September
30, 2011
|
|
|
97,950
|
|
|
|
-
|
|
|
|
-
|
|
|
|
97,950
|
|
|
Schedule of Inventory, Current [Table Text Block] |
|
|
|
|
|
|
|
Raw
materials
|
|
$
|
2,300,380
|
|
|
$
|
2,158,647
|
|
Work-in-process
|
|
|
336,298
|
|
|
|
304,793
|
|
Finished
goods
|
|
|
334,936
|
|
|
|
293,711
|
|
|
|
$
|
2,971,614
|
|
|
$
|
2,757,151
|
|
|
Property, Plant and Equipment, Estimated Useful Lives |
|
Years
|
Equipment
|
3
– 7
|
Leasehold
improvements
|
7-10
or life of lease
|
Vehicles
|
3
|
|
Property, Plant and Equipment [Table Text Block] |
|
|
September
30,
|
|
|
September
30,
|
|
|
|
2012
|
|
|
2011
|
|
Manufacturing
Equipment
|
|
|
1,316,768
|
|
|
|
1,188,965
|
|
Office
Equipment
|
|
|
1,823,283
|
|
|
|
1,720,006
|
|
Leasehold
Improvements
|
|
|
127,883
|
|
|
|
127,883
|
|
Vehicles
|
|
|
171,742
|
|
|
|
133,199
|
|
|
|
|
3,439,676
|
|
|
|
3,170,053
|
|
Less
accumulated depreciation
|
|
|
2,332,208
|
|
|
|
2,184,022
|
|
|
|
$
|
1,107,468
|
|
|
$
|
986,031
|
|
|
|
|
|
|
|
|
|
|
Depreciation
expense
|
|
$
|
403,927
|
|
|
$
|
358,502
|
|
|
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block] |
Year
ended September 30,
|
|
2012
|
|
|
2011
|
|
Net
income
|
|
$
|
7,701,194
|
|
|
$
|
6,167,446
|
|
Weighted
average common shares
|
|
|
12,371,371
|
|
|
|
12,085,491
|
|
Dilutive
potential common shares
|
|
|
418,798
|
|
|
|
664,442
|
|
Weighted
average dilutive common shares outstanding
|
|
|
12,790,169
|
|
|
|
12,749,933
|
|
Earnings
per share:
|
|
|
|
|
|
|
|
|
Basic
|
|
$
|
0.62
|
|
|
$
|
0.51
|
|
Diluted
|
|
$
|
0.60
|
|
|
$
|
0.48
|
|
|