Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Past Due and Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	$ 2,447	$ 2,956
90 or more days past due	2,302	6,268
90 or more days past due and still accruing	207	190
Nonaccrual loans (including impaired nonaccruals)	9,287	6,584
Construction Residential [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due		45
Construction Other [Member] | Real Estate Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	28	45
Equity Lines [Member] | Consumer Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	25
Closed-end First Liens [Member] | Consumer Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	719	903
90 or more days past due	185	252
90 or more days past due and still accruing	80	128
Nonaccrual loans (including impaired nonaccruals)	105	308
Closed-end Junior Liens [Member] | Consumer Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	74	10
90 or more days past due	1
90 or more days past due and still accruing	1
Investor-owned Residential Real Estate [Member] | Consumer Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	336
90 or more days past due	45
Nonaccrual loans (including impaired nonaccruals)	59
Investor-owned Residential Real Estate [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due		422
90 or more days past due		91
Nonaccrual loans (including impaired nonaccruals)		91
Multifamily Real Estate [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	850	430
90 or more days past due	868	3,278
Nonaccrual loans (including impaired nonaccruals)	2,735	3,278
Commercial Real Estate, Owner Occupied [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due		604
90 or more days past due	1,066	2,519
90 or more days past due and still accruing	102
Nonaccrual loans (including impaired nonaccruals)	2,573	2,756
Commercial Real Estate, Other [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due		32
90 or more days past due	70
Nonaccrual loans (including impaired nonaccruals)	3,066
Commercial and Industrial [Member] | Commercial Non Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	153	196
90 or more days past due	43	43
Nonaccrual loans (including impaired nonaccruals)	749	128
Credit Card Receivable [Member] | Consumer Non Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	3	3
90 or more days past due	4	13
90 or more days past due and still accruing	4	13
Automobile [Member] | Consumer Non Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	205	217
90 or more days past due	20	26
90 or more days past due and still accruing	20	2
Nonaccrual loans (including impaired nonaccruals)		23
Other Consumer Loans [Member] | Consumer Non Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30 – 89 days past due	54	49
90 or more days past due		46
90 or more days past due and still accruing		$ 47