Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans [Line Items]
Recorded Investment In Nonaccrual Loans	$ 16,164	$ 28,577
Commercial And Industrial [Member]
Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans [Line Items]
Recorded Investment In Nonaccrual Loans	1,680	1,308
Real Estate Mortgage Residential [Member]
Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans [Line Items]
Recorded Investment In Nonaccrual Loans	816	239
Real Estate Mortgage Commercial [Member]
Note 3 - Loans (Details) - Recorded Investment In Nonaccrual Loans [Line Items]
Recorded Investment In Nonaccrual Loans	13,668	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