Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Past Due and Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	$ 2,757	$ 2,956
90 or More Days Past Due	5,100	6,268
90 or More Days Past Due and Still Accruing	163	190	568
Nonaccruals (Including Impaired Nonaccruals)	6,078	6,584	12,425
Real Estate Construction [Member] | Construction residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	163	45
Real Estate Construction [Member] | Construction other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	14	45
Consumer Real Estate [Member] | Residential closed end first liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	1,025	903
90 or More Days Past Due	270	252
90 or More Days Past Due and Still Accruing	148	128
Nonaccruals (Including Impaired Nonaccruals)	267	308
Consumer Real Estate [Member] | Residential closed end junior liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	58	10
Consumer Real Estate [Member] | Investor-owned residential real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	334	422
90 or More Days Past Due		91
Nonaccruals (Including Impaired Nonaccruals)	17	91
Commercial Real Estate Loans [Member] | Multifamily real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	728	430
90 or More Days Past Due	3,271	3,278
Nonaccruals (Including Impaired Nonaccruals)	3,271	3,278
Commercial Real Estate Loans [Member] | Commercial real estate, owner occupied [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	128	604
90 or More Days Past Due	1,477	2,519
Nonaccruals (Including Impaired Nonaccruals)	2,378	2,756
Commercial Real Estate Loans [Member] | Commercial real estate, other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due		32
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	202	196
90 or More Days Past Due	43	43
Nonaccruals (Including Impaired Nonaccruals)	121	128
Consumer Non Real Estate [Member] | Credit Card Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	2	3
90 or More Days Past Due	3	13
90 or More Days Past Due and Still Accruing	3	13
Consumer Non Real Estate [Member] | Automobile [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	78	217
90 or More Days Past Due	36	26
90 or More Days Past Due and Still Accruing	12	2
Nonaccruals (Including Impaired Nonaccruals)	24	23
Consumer Non Real Estate [Member] | Other Consumer Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 Days Past Due	25	49
90 or More Days Past Due		46
90 or More Days Past Due and Still Accruing		$ 47