Note 3 - Loans and Allowance for Credit Losses (Details) - Changes in the Carrying Amount of Impaired Purchased Loans (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Purchased Covered Loans [Member]
Note 3 - Loans and Allowance for Credit Losses (Details) - Changes in the Carrying Amount of Impaired Purchased Loans [Line Items]
Carrying amount at the beginning of the period	$ 7,865	$ 18,591
Reductions during the period	(5,363)	(10,726)
Carrying amount at the end of the period	2,502	7,865
Purchased Non-Covered Loans [Member]
Note 3 - Loans and Allowance for Credit Losses (Details) - Changes in the Carrying Amount of Impaired Purchased Loans [Line Items]
Carrying amount at the beginning of the period	6,764	15,572
Reductions during the period	(4,330)	(8,808)
Carrying amount at the end of the period	$ 2,434	$ 6,764