Note 7 - Retirement Plan (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Compensation and Retirement Disclosure [Abstract]
Number of Years of Employee Service Required to be Eligible for 401(k) Plan	1 year
Defined Contribution Plan, Cost Recognized	$ 0.2	$ 0.2	$ 0.2