Note 6 - Loans (Details) - Age Analysis of Past Due Loans Excluding Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	$ 2,585	$ 2,490
60-89 Days Past Due	1,040	3,125
90 Days or More Past Due	0	37
Total Past Due	3,625	5,652
Nonaccrual Loans	10,076	15,668
Current	973,293	942,237
Total Financing Receivables	986,994	963,557	983,909
Recorded Investment > 90 days and accruing	0	37
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	220	206
60-89 Days Past Due	0	140
90 Days or More Past Due	0	0
Total Past Due	220	346
Nonaccrual Loans	116	447
Current	166,658	149,251
Total Financing Receivables	166,994	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	999	604
60-89 Days Past Due	97	1,881
90 Days or More Past Due	0	0
Total Past Due	1,096	2,485
Nonaccrual Loans	5,447	8,454
Current	472,853	461,758
Total Financing Receivables	479,396	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	907	772
60-89 Days Past Due	826	969
90 Days or More Past Due	0	37
Total Past Due	1,733	1,778
Nonaccrual Loans	4,217	6,038
Current	211,002	206,580
Total Financing Receivables	216,952	214,396
Recorded Investment > 90 days and accruing	0	37
Junior Lein Residential Mortgage Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days Past Due	0	473
60-89 Days Past Due	81	96
90 Days or More Past Due	0	0
Total Past Due	81	569
Nonaccrual Loans	287	328
Current	54,120	57,850
Total Financing Receivables	54,488	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	459	435
60-89 Days Past Due	36	39
90 Days or More Past Due	0	0
Total Past Due	495	474
Nonaccrual Loans	9	401
Current	68,660	66,798
Total Financing Receivables	69,164	67,673
Recorded Investment > 90 days and accruing	$ 0	$ 0