Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans [Line Items]
Recorded Investment In Nonaccrual Loans	$ 15,016	$ 28,577
Commercial And Industrial [Member]
Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans [Line Items]
Recorded Investment In Nonaccrual Loans	1,441	1,308
Real Estate Mortgage Residential [Member]
Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans [Line Items]
Recorded Investment In Nonaccrual Loans	606	239
Real Estate Mortgage Commercial [Member]
Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans [Line Items]
Recorded Investment In Nonaccrual Loans	12,969	22,501
Real Estate Construction Residential [Member]
Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans [Line Items]
Recorded Investment In Nonaccrual Loans	0	1,426
Real Estate Construction Commercial [Member]
Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans [Line Items]
Recorded Investment In Nonaccrual Loans	$ 0	$ 3,103