Note 5 - Deposits (Details) - USD ($)	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Disclosure Text Block [Abstract]
Deposits	$ 2,254,129,000	$ 2,276,915,000
Increase (Decrease) in Deposits	$ (22,800,000)
Percentage of Increase in Aggregate Deposits	(1.00%)