Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Past Due and Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	$ 2,814	$ 4,090
90 or More Days Past Due	10,347	3,755
90 or More Days Past Due and Still Accruing	149	170	114
Nonaccruals (Including Impaired Nonaccruals)	11,236	13,021	6,130
Real Estate Construction [Member] | Construction residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
90 or More Days Past Due	123	123
Nonaccruals (Including Impaired Nonaccruals)	123	123
Real Estate Construction [Member] | Construction other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	46	31
90 or More Days Past Due	2,869	89
Nonaccruals (Including Impaired Nonaccruals)	2,869	3,109
Consumer Real Estate [Member] | Equity Lines [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	5	22
90 or More Days Past Due		30
90 or More Days Past Due and Still Accruing		30
Nonaccruals (Including Impaired Nonaccruals)		98
Consumer Real Estate [Member] | Residential closed end first liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	1,045	1,507
90 or More Days Past Due	338	605
90 or More Days Past Due and Still Accruing	146	126
Nonaccruals (Including Impaired Nonaccruals)	447	801
Consumer Real Estate [Member] | Residential closed end junior liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	54	121
90 or More Days Past Due	77	39
Nonaccruals (Including Impaired Nonaccruals)	78	120
Consumer Real Estate [Member] | Investor-owned residential real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	170
90 or More Days Past Due	53
Nonaccruals (Including Impaired Nonaccruals)	52
Commercial Real Estate Loans [Member] | Multifamily real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	433	671
90 or More Days Past Due	3,278	261
Nonaccruals (Including Impaired Nonaccruals)	3,970	4,624
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	573	1,113
90 or More Days Past Due	3,540
Nonaccruals (Including Impaired Nonaccruals)	3,540	3,536
Commercial Real Estate Loans [Member] | Commercial real estate, other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	35	40
90 or More Days Past Due		2,089
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	182	291
90 or More Days Past Due	43	505
Nonaccruals (Including Impaired Nonaccruals)	133	561
Consumer Non Real Estate [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	20	20
90 or More Days Past Due	2	4
90 or More Days Past Due and Still Accruing	2	4
Consumer Non Real Estate [Member] | Automobile [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	190	142
90 or More Days Past Due	24	10
90 or More Days Past Due and Still Accruing	1	10
Nonaccruals (Including Impaired Nonaccruals)	24	49
Consumer Non Real Estate [Member] | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	$ 61	$ 132