Note A - Summary of Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($)	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2014
Balance at Beginning of Year	$ 79,473	$ 97,950	$ 97,950
Additions Charged to Costs and Expenses	25,000
Less Write-offs	(11,000)	(18,477)
Balance at End of Year	$ 93,473	$ 79,473	$ 97,950