Note 3 - Loans and Allowance for Loan Losses (Details) - Acquired Impaired Loans Accretable Yield - USD ($)		3 Months Ended	9 Months Ended
		Sep. 30, 2015	Sep. 30, 2015
Acquired Impaired Loans Accretable Yield [Abstract]
Beginning balance		$ 5,115,000	$ 4,998,000
Ending balance		5,450,000	5,450,000
Additions		16,000	16,000
Accretion income		(653,000)	(1,980,000)
Net reclassification from nonaccretable to accretable		1,520,000	3,166,000
Reductions	[1]	$ (548,000)	$ (750,000)

[1] Reductions primarily reflect the result of exit events, including loan payoffs and charge-offs.