Note 2 - Investment Securities (Details) (USD $)	1 Months Ended	12 Months Ended		3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Sep. 30, 2014	Sep. 30, 2014 Municipal Notes [Member]	Sep. 30, 2014 Municipal Notes [Member]	Sep. 30, 2013 Municipal Notes [Member]	Sep. 30, 2014 Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]	Sep. 30, 2014 Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]	Sep. 30, 2014 Mutual Funds [Member]	Sep. 30, 2014 Mutual Funds [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member]	Sep. 30, 2013 US Government Agencies Debt Securities [Member]
Note 2 - Investment Securities (Details) [Line Items]
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions			72
Available-for-sale, Securities in Unrealized Loss Positions, Depreciation from Amortized Cost, Percentage			1.30%
Available-for-sale Securities, Gross Realized Gains				$ 12,000	$ 66,000	$ 21,000	$ 5,000	$ 5,000			$ 8,000	$ 8,000
Available-for-sale Securities, Gross Realized Losses									17,000	17,000
Equity Method Investment Number Of Common Shares Acquired (in Shares)	31,750	100,000
Percentage Of Outstanding Shares Of Voting Common Stock	9.00%
Cost Method Investments	$ 711,000