Note 3 - Loans (Detail) - Recorded Investment In Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Recorded Investment In Nonaccrual Loans	$ 36,149	$ 44,841
Commercial And Industrial [Member]
Recorded Investment In Nonaccrual Loans	7,356	10,665
Real Estate Mortgage Residential [Member]
Recorded Investment In Nonaccrual Loans	184	251
Real Estate Mortgage Commercial [Member]
Recorded Investment In Nonaccrual Loans	23,116	30,600
Real Estate Construction Residential [Member]
Recorded Investment In Nonaccrual Loans	2,345
Real Estate Construction Commercial [Member]
Recorded Investment In Nonaccrual Loans	3,147	3,324
Consumer And Other [Member]
Recorded Investment In Nonaccrual Loans	$ 1	$ 1