Note B - Commitments and Facilities (Details) (USD $)	12 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012	Nov. 13, 2014 Subsequent Event [Member]
Note B - Commitments and Facilities (Details) [Line Items]
Operating Leases, Rent Expense	$ 505,000	$ 450,000	$ 406,000
Purchase Obligation, Due in Next Twelve Months	2,100,000
Stock Repurchase Value of Shares Authorized to be Repurchased				$ 8,000,000

Minimum amount of purchase arrangement maturing in the next fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

No definition available.

Name:	us-gaap_PurchaseObligationDueInNextTwelveMonths
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant