Note 9 - Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified														6 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2013 Purchased Covered Loans [Member]	Mar. 31, 2013 Purchased Covered Loans [Member]	Dec. 31, 2012 Purchased Covered Loans [Member]	Jun. 30, 2012 Purchased Covered Loans [Member]	Mar. 31, 2012 Purchased Covered Loans [Member]	Jun. 30, 2013 Purchased Non-Covered Loans [Member]	Dec. 31, 2012 Purchased Non-Covered Loans [Member]	Jun. 30, 2013 Fair Value, Inputs, Level 2 [Member]
Note 9 - Fair Value Measurements (Details) [Line Items]
Fair Value Inputs, Discount Rate														10.00%
Loans and Leases Receivable, Allowance	$ 30,926	$ 30,354	$ 30,234	$ 31,523	$ 31,883	$ 32,597	$ 285	$ 738	$ 1,005	$ 240	$ 139
Fair Value Discount, Credit Default Risk, Purchased Loans							$ 18,514		$ 26,128			$ 3,609	$ 5,226