Note 6 - Loans (Details) - Impaired Loans (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	$ 6,496	$ 6,323
Period End Loans With Related Allowance Related Allowance	6,496	6,323
Total
Period End Loans With Related Allowance Recorded Investment	24,409	32,903
Period End Loans With Related Allowance Unpaid Principal Balance	30,772	36,387
Period End Loans With Related Allowance Related Allowance	6,496	6,323
Period End Loans No Allocated Allowance For Loan Losses [Member] | Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Recorded Investment	398	891
Period End Loans With No Related Allowance Unpaid Principal Balance	396	891
Period End Loans With No Related Allowance Related Allowance	0	0
Period End Loans With Related Allowance Related Allowance	0	0
Total
Period End Loans With Related Allowance Related Allowance	0	0
Period End Loans No Allocated Allowance For Loan Losses [Member] | Commercial Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Recorded Investment	7,473	9,215
Period End Loans With No Related Allowance Unpaid Principal Balance	7,449	9,212
Period End Loans With No Related Allowance Related Allowance	0	0
Period End Loans With Related Allowance Related Allowance	0	0
Total
Period End Loans With Related Allowance Related Allowance	0	0
Period End Loans No Allocated Allowance For Loan Losses [Member] | First Lien Residential Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Recorded Investment	0	0
Period End Loans With No Related Allowance Unpaid Principal Balance	0	0
Period End Loans With No Related Allowance Related Allowance	0	0
Period End Loans With Related Allowance Related Allowance	0	0
Total
Period End Loans With Related Allowance Related Allowance	0	0
Period End Loans No Allocated Allowance For Loan Losses [Member] | Junior Lein Residential Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Recorded Investment	0	0
Period End Loans With No Related Allowance Unpaid Principal Balance	0	0
Period End Loans With No Related Allowance Related Allowance	0	0
Period End Loans With Related Allowance Related Allowance	0	0
Total
Period End Loans With Related Allowance Related Allowance	0	0
Period End Loans No Allocated Allowance For Loan Losses [Member] | Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Recorded Investment	0	0
Period End Loans With No Related Allowance Unpaid Principal Balance	0	0
Period End Loans With No Related Allowance Related Allowance	0	0
Period End Loans With Related Allowance Related Allowance	0	0
Total
Period End Loans With Related Allowance Related Allowance	0	0
Period End Loans No Allocated Allowance For Loan Losses [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Recorded Investment	7,871	10,106
Period End Loans With No Related Allowance Unpaid Principal Balance	7,845	10,103
Period End Loans With No Related Allowance Related Allowance	0	0
Period End Loans With Related Allowance Related Allowance	0	0
Total
Period End Loans With Related Allowance Related Allowance	0	0
Period End Loans Allocated Allowance Loan Losses [Member] | Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	549	515
Period End Loans With Related Allowance Recorded Investment	448	2,273
Period End Loans With Related Allowance Unpaid Principal Balance	992	2,791
Period End Loans With Related Allowance Related Allowance	549	515
Total
Period End Loans With Related Allowance Related Allowance	549	515
Period End Loans Allocated Allowance Loan Losses [Member] | Commercial Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	3,678	2,971
Period End Loans With Related Allowance Recorded Investment	8,313	8,377
Period End Loans With Related Allowance Unpaid Principal Balance	12,014	11,346
Period End Loans With Related Allowance Related Allowance	3,678	2,971
Total
Period End Loans With Related Allowance Related Allowance	3,678	2,971
Period End Loans Allocated Allowance Loan Losses [Member] | First Lien Residential Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	2,082	2,481
Period End Loans With Related Allowance Recorded Investment	7,013	10,993
Period End Loans With Related Allowance Unpaid Principal Balance	9,247	10,993
Period End Loans With Related Allowance Related Allowance	2,082	2,481
Total
Period End Loans With Related Allowance Related Allowance	2,082	2,481
Period End Loans Allocated Allowance Loan Losses [Member] | Junior Lein Residential Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	168	122
Period End Loans With Related Allowance Recorded Investment	365	562
Period End Loans With Related Allowance Unpaid Principal Balance	533	562
Period End Loans With Related Allowance Related Allowance	168	122
Total
Period End Loans With Related Allowance Related Allowance	168	122
Period End Loans Allocated Allowance Loan Losses [Member] | Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	19	234
Period End Loans With Related Allowance Recorded Investment	399	592
Period End Loans With Related Allowance Unpaid Principal Balance	141	592
Period End Loans With Related Allowance Related Allowance	19	234
Total
Period End Loans With Related Allowance Related Allowance	19	234
Period End Loans Allocated Allowance Loan Losses [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	6,496	6,323
Period End Loans With Related Allowance Recorded Investment	16,538	22,797
Period End Loans With Related Allowance Unpaid Principal Balance	22,927	26,284
Period End Loans With Related Allowance Related Allowance	6,496	6,323
Total
Period End Loans With Related Allowance Related Allowance	6,496	6,323
Commercial and Industrial [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	549	515
Period End Loans With Related Allowance Related Allowance	549	515
Total
Period End Loans With Related Allowance Recorded Investment	846	3,164
Period End Loans With Related Allowance Unpaid Principal Balance	1,388	3,682
Period End Loans With Related Allowance Related Allowance	549	515
Commercial Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	3,678	2,971
Period End Loans With Related Allowance Related Allowance	3,678	2,971
Total
Period End Loans With Related Allowance Recorded Investment	15,786	17,592
Period End Loans With Related Allowance Unpaid Principal Balance	19,463	20,558
Period End Loans With Related Allowance Related Allowance	3,678	2,971
First Lien Residential Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	2,082	2,481
Period End Loans With Related Allowance Related Allowance	2,082	2,481
Total
Period End Loans With Related Allowance Recorded Investment	7,013	10,993
Period End Loans With Related Allowance Unpaid Principal Balance	9,247	10,993
Period End Loans With Related Allowance Related Allowance	2,082	2,481
Junior Lein Residential Mortgage Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	168	122
Period End Loans With Related Allowance Related Allowance	168	122
Total
Period End Loans With Related Allowance Recorded Investment	365	562
Period End Loans With Related Allowance Unpaid Principal Balance	533	562
Period End Loans With Related Allowance Related Allowance	168	122
Consumer Loans [Member]
Financing Receivable, Impaired [Line Items]
Period End Loans With No Related Allowance Related Allowance	19	234
Period End Loans With Related Allowance Related Allowance	19	234
Total
Period End Loans With Related Allowance Recorded Investment	399	592
Period End Loans With Related Allowance Unpaid Principal Balance	141	592
Period End Loans With Related Allowance Related Allowance	$ 19	$ 234