Note 3 - Loans (Detail) - Recorded Investment In Loans At The Dates Indicated: (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2011
Accrued Interest Receivable	$ 3,938	$ 4,327
Recorded Investment In Loans	1,100,060	1,048,006	1,062,565
Commercial Portfolio Segment [Member]
Gross Loan Balance	377,054	345,265
Deferred Loan Fees	(755)	(777)
Accrued Interest Receivable	1,010	1,077
Recorded Investment In Loans	377,309	345,565
Real Estate Mortgage [Member]
Gross Loan Balance	707,553	687,409
Deferred Loan Fees	(1,599)	(1,327)
Accrued Interest Receivable	2,167	2,270
Recorded Investment In Loans	708,121	688,352
Real Estate Construction [Member]
Gross Loan Balance	7,911	10,308
Deferred Loan Fees	(12)	(2)
Accrued Interest Receivable	8	29
Recorded Investment In Loans	7,907	10,335
Consumer And Other [Member]
Gross Loan Balance	6,955	3,936
Deferred Loan Fees	(252)	(196)
Accrued Interest Receivable	20	14
Recorded Investment In Loans	6,723	3,754
Recorded Investment [Member]
Gross Loan Balance	1,099,473	1,046,918
Deferred Loan Fees	(2,618)	(2,302)
Accrued Interest Receivable	3,205	3,390
Recorded Investment In Loans	$ 1,100,060	$ 1,048,006