Note 3 - Loans (Details) - Age Analysis of Past Due Loans Excluding Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 2,783	$ 2,490
60-89 Days Past Due	1,486	3,125
90 Days or More Past Due	26	37
Total Past Due	4,295	5,652
Nonaccrual loans	11,204	15,668
Current	966,787	942,442
Total Financing Receivables	982,286	963,762
Recorded Investment > 90 days and accruing	26	37
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	685	206
60-89 Days Past Due	46	140
90 Days or More Past Due	0	0
Total Past Due	731	346
Nonaccrual loans	111	448
Current	158,249	149,250
Total Financing Receivables	159,091	150,044
Recorded Investment > 90 days and accruing	0	0
Commercial Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	625	604
60-89 Days Past Due	324	1,881
90 Days or More Past Due	14	0
Total Past Due	963	2,485
Nonaccrual loans	5,914	8,452
Current	472,783	461,760
Total Financing Receivables	479,660	472,697
Recorded Investment > 90 days and accruing	14	0
First Lien Residential Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	789	772
60-89 Days Past Due	1,039	969
90 Days or More Past Due	12	37
Total Past Due	1,840	1,778
Nonaccrual loans	4,868	6,040
Current	210,836	206,578
Total Financing Receivables	217,544	214,396
Recorded Investment > 90 days and accruing	12	37
Junior Lein Residential Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	379	473
60-89 Days Past Due	19	96
90 Days or More Past Due	0	0
Total Past Due	398	569
Nonaccrual loans	275	327
Current	54,178	57,851
Total Financing Receivables	54,851	58,747
Recorded Investment > 90 days and accruing	0	0
Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	305	435
60-89 Days Past Due	58	39
90 Days or More Past Due	0	0
Total Past Due	363	474
Nonaccrual loans	36	401
Current	70,538	66,798
Total Financing Receivables	70,937	67,673
Recorded Investment > 90 days and accruing	0	0
Deferred Fees and Costs [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or More Past Due	0	0
Total Past Due	0	0
Nonaccrual loans	0	0
Current	203	205
Total Financing Receivables	203	205
Recorded Investment > 90 days and accruing	$ 0	$ 0