Annual report pursuant to Section 13 and 15(d)

Note A - Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details)

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Note A - Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($)
12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2015
Balance at Beginning of Year $ 93,473 $ 79,473 $ 97,950
Additions Charged to Costs and Expenses 25,000
Less Write-offs (14,388) (11,000) (18,477)
Balance at End of Year $ 79,085 $ 93,473 $ 79,473