Note 5 - Fair Value Measurements (Details Textual) (USD $)	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Fair Value Disclosures [Abstract]
Payments to Acquire Available-for-sale Securities	$ 0	$ 521,000	$ 1,751,000
Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities	1,140,000	1,010,000
Proceeds from Sale of Available-for-sale Securities	0	90,000
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	0	0
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value Disclosures [Abstract]
Assets, Fair Value Disclosure	$ 0	$ 0