Note 3 - Cash, Cash Equivalents and Investments (Details) - CD Maturity Dates (USD $)	Mar. 31, 2014	Sep. 30, 2013
CD Maturity Dates [Abstract]
Less than one year	$ 5,981,000	$ 5,992,000
1-3 years	9,525,000	6,770,000
Total	$ 15,506,000	$ 12,762,000