Note 5 - Loans Acquired (Details) - Summary of the changes in the FDIC true-up provision: (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Summary of the changes in the FDIC true-up provision: [Abstract]
Beginning balance	$ 5,256	$ 3,699	$ 4,854	$ 3,419
Amortization expense	38	38	81	66
Adjustments related to changes in expected losses	283	250	642	502
Balance, ending	$ 5,577	$ 3,987	$ 5,577	$ 3,987