Note 3 - Loans (Detail) - Recorded Investment In Loans At The Dates Indicated: (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Gross Loan Balance	$ 1,066,922	$ 1,016,295
Accrued Interest Receivable	4,411	4,327
Recorded Investment In Loans	1,097,588	1,048,006
Commercial Portfolio Segment [Member]
Gross Loan Balance	375,897	345,265
Deferred Loan Fees	(830)	(777)
Accrued Interest Receivable	1,106	1,077
Recorded Investment In Loans	376,173	345,565
Real Estate Mortgage [Member]
Gross Loan Balance	708,090	687,409
Deferred Loan Fees	(1,620)	(1,327)
Accrued Interest Receivable	2,229	2,270
Recorded Investment In Loans	708,699	688,352
Real Estate Construction [Member]
Gross Loan Balance	7,712	10,308
Deferred Loan Fees	(8)	(2)
Accrued Interest Receivable	7	29
Recorded Investment In Loans	7,711	10,335
Consumer And Other [Member]
Gross Loan Balance	5,198	3,936
Deferred Loan Fees	(206)	(196)
Accrued Interest Receivable	13	14
Recorded Investment In Loans	5,005	3,754
Total Loans [Member]
Gross Loan Balance	1,096,897	1,046,918
Deferred Loan Fees	(2,664)	(2,302)
Accrued Interest Receivable	3,355	3,390
Recorded Investment In Loans	$ 1,097,588	$ 1,048,006