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, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Summary of the Changes in the FDIC True-Up Provision [Abstract]
Beginning balance	$ 7,253	$ 5,256	$ 6,768	$ 4,854
Amortization expense	41	38	84	81
Adjustments related to changes in expected losses	474	283	916	642
Balance, ending	$ 7,768	$ 5,577	$ 7,768	$ 5,577