Note 5 - Loans Acquired (Details) - Summary of the changes in the FDIC true-up provision: (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Summary of the changes in the FDIC true-up provision: [Abstract]
Beginning balance	$ 5,577	$ 3,987	$ 4,854	$ 3,419
Amortization expense	40	37	121	103
Adjustments related to changes in expected losses	350	246	992	748
Balance, ending	$ 5,967	$ 4,270	$ 5,967	$ 4,270