Note 5 - Loans Acquired (Details) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Loans Acquired [Abstract]
Acquired Loans, Covered By FDIC Loss Share Agreements	$ 148,900,000	$ 210,800,000
Certain Loans Acquired In Transfer Accretable Yield Adjustment	36,700,000
FDIC Indemnification Asset Accretable Yield Adjustment	28,900,000
Certain Loans Acquired In Transfer Accretable Yield Adj Current Year Increase Decrease	8,400,000
FDIC Indemnification Asset Accretable Yield Adj Current Year Increase Decrease	(7,900,000)
Certain Loans Acquired In Transfer Accretable Yield Adj Period Impact	$ 476,000