Note 4 - Loans Receivable and Allowance for Loan Losses (Details) - Allowance for Loan Losses to Loan Portfolio Segment (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	$ 4,924	$ 5,681	$ 6,016	$ 9,385
Total Loans ending balance	476,908	423,829
Loans Ending balance: individually evaluated for impairment	11,724	22,021
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	465,184	401,808
Loans Ending balance: individually evaluated for impairment	7	1,891
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	4,917	3,790
Charge-offs	(867)	(1,668)	(1,070)
Recoveries	110	363	80
Provision		970us-gaap_ProvisionForLoanAndLeaseLosses	(2,379)us-gaap_ProvisionForLoanAndLeaseLosses
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,918	2,285	942
Total Loans ending balance	53,973	35,137
Loans Ending balance: individually evaluated for impairment	2	6,152
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	53,971	28,985
Loans Ending balance: individually evaluated for impairment		1,500
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	1,918	785
Charge-offs	(49)	(63)
Recoveries	6	4
Provision	(324)	1,402
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,419	1,585	3,509
Total Loans ending balance	254,505	222,772
Loans Ending balance: individually evaluated for impairment	7,398	7,766
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	247,107	215,006
Loans Ending balance: individually evaluated for impairment		31
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	1,419	1,554
Charge-offs	(297)	(403)
Recoveries	60	335
Provision	71	(1,856)
Real Estate Construction [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	63	260	311
Total Loans ending balance	3,096	260
Loans Ending balance: individually evaluated for impairment		260
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	3,096
Loans Ending balance: individually evaluated for impairment		260
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	63
Charge-offs	(260)	(205)
Recoveries	10	20
Provision	53	134
Real Estate Construction to Permanent [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	215	25	19
Total Loans ending balance	10,627	11,372
Loans Ending balance: individually evaluated for impairment		1,189
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	10,627	10,183
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	215	25
Provision	190	6
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	831	795	897
Total Loans ending balance	108,543	106,968
Loans Ending balance: individually evaluated for impairment	3,764	6,060
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	104,779	100,908
Loans Ending balance: individually evaluated for impairment		98
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	831	697
Charge-offs	(195)	(919)
Recoveries	30	1
Provision	201	816
Consumer Installment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	478	534	217
Total Loans ending balance	46,164	47,320
Loans Ending balance: individually evaluated for impairment	560	594
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	45,604	46,726
Loans Ending balance: individually evaluated for impairment	7	2
Allowance for Loan Losses Ending balance: collectively evaluated for impairment	471	532
Charge-offs	(66)	(78)
Recoveries	4	3
Provision	6	392
Unallocated Financing Receivables [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance		197	121
Allowance for Loan Losses Ending balance: collectively evaluated for impairment		197
Provision	$ (197)	$ 76

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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The balance of financing receivables that were collectively evaluated for impairment.

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The balance of financing receivables that were individually evaluated for impairment.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount of expense related to estimated loss from loan and lease transactions.

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