Note 3 - Loans (Details) - Age Analysis of Past Due Loans Excluding Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 3,411	$ 2,490
60-89 Days Past Due	2,028	3,125
90 Days or More Past Due	18	37
Total Past Due	5,457	5,652
Nonaccrual loans	11,849	15,668
Current	957,498	942,442
Total Financing Receivables	974,804	963,762
Recorded Investment > 90 days and accruing	18	37
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	568	206
60-89 Days Past Due	47	140
90 Days or More Past Due	0	0
Total Past Due	615	346
Nonaccrual loans	123	448
Current	154,790	149,250
Total Financing Receivables	155,528	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	1,826	604
60-89 Days Past Due	305	1,881
90 Days or More Past Due	0	0
Total Past Due	2,131	2,485
Nonaccrual loans	5,699	8,452
Current	470,020	461,760
Total Financing Receivables	477,850	472,697
Recorded Investment > 90 days and accruing	0	0
First Lien Residential Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	256	772
60-89 Days Past Due	1,643	969
90 Days or More Past Due	18	37
Total Past Due	1,917	1,778
Nonaccrual loans	5,676	6,040
Current	207,242	206,578
Total Financing Receivables	214,835	214,396
Recorded Investment > 90 days and accruing	18	37
Junior Lein Residential Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	417	473
60-89 Days Past Due	19	96
90 Days or More Past Due	0	0
Total Past Due	436	569
Nonaccrual loans	301	327
Current	55,746	57,851
Total Financing Receivables	56,483	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	344	435
60-89 Days Past Due	14	39
90 Days or More Past Due	0	0
Total Past Due	358	474
Nonaccrual loans	50	401
Current	69,431	66,798
Total Financing Receivables	69,839	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	269	205
Total Financing Receivables	269	205
Recorded Investment > 90 days and accruing	$ 0	$ 0