Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Dec. 31, 2014
Ending allowance balance attributable to loans:
Allowance individually evaluated for impairment					$ 62	$ 1,351
Allowance collectively evaluated for impairment					3,432	3,495
Allowance for loan losses	$ 3,494	$ 5,066	$ 3,494	$ 5,055	3,494	4,846
Ending balance	3,494	5,055	3,494	5,055
Beginning balance	3,600	5,066	4,846	4,922
Provisions	0	75	50	190
Charge-offs	(156)	(140)	(1,537)	(366)
Recoveries	50	54	135	309
Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses	0		0		0	0
Ending balance	0		0
Beginning balance			0
Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member]
Ending allowance balance attributable to loans:
Allowance individually evaluated for impairment					43	47
Allowance collectively evaluated for impairment					541	562
Allowance for loan losses	584	843	584	825	584	609
Ending balance	584	825	584	825
Beginning balance	634	843	609	811
Provisions	(15)	36	27	148
Charge-offs	(41)	(56)	(61)	(140)
Recoveries	6	2	9	6
Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses	0		0		0	0
Ending balance	0		0
Beginning balance			0
Real Estate Mortgage Portfolio Segment [Member] \| Land Loan [Member]
Ending allowance balance attributable to loans:
Allowance individually evaluated for impairment					0	0
Allowance collectively evaluated for impairment					161	201
Allowance for loan losses	161	153	161	156	161	201
Ending balance	161	156	161	156
Beginning balance	173	153	201	152
Provisions	(12)	3	(40)	4
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Real Estate Mortgage Portfolio Segment [Member] \| Land Loan [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses	0		0		0	0
Ending balance	0		0
Beginning balance			0
Real Estate Mortgage Portfolio Segment [Member] \| Construction Loans [Member]
Ending allowance balance attributable to loans:
Allowance individually evaluated for impairment					0	0
Allowance collectively evaluated for impairment					49	60
Allowance for loan losses	49	78	49	77	49	60
Ending balance	49	77	49	77
Beginning balance	51	78	60	63
Provisions	(2)	(1)	(11)	14
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Real Estate Mortgage Portfolio Segment [Member] \| Construction Loans [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses	0		0		0	0
Ending balance	0		0
Beginning balance			0
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Loan [Member]
Ending allowance balance attributable to loans:
Allowance individually evaluated for impairment					8	11
Allowance collectively evaluated for impairment					1,605	1,490
Allowance for loan losses	1,613	1,280	1,613	1,261	1,613	1,501
Ending balance	1,613	1,261	1,613	1,261
Beginning balance	1,669	1,280	1,501	1,284
Provisions	(60)	(19)	96	(23)
Charge-offs	0	0	0	0
Recoveries	4	0	16	0
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Loan [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses	0		0		0	0
Ending balance	0		0
Beginning balance			0
Commercial Portfolio Segment [Member]
Ending allowance balance attributable to loans:
Allowance individually evaluated for impairment					0	1,293
Allowance collectively evaluated for impairment					185	187
Allowance for loan losses	185	1,444	185	1,447	185	1,480
Ending balance	185	1,447	185	1,447
Beginning balance	161	1,444	1,480	1,446
Provisions	19	(5)	(97)	(12)
Charge-offs	0	0	(1,205)	0
Recoveries	5	8	7	13
Commercial Portfolio Segment [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses	0		0		0	0
Ending balance	0		0
Beginning balance			0
Consumer Portfolio Segment [Member] \| Home Equity And Second Mortgage [Member]
Ending allowance balance attributable to loans:
Allowance individually evaluated for impairment					11	0
Allowance collectively evaluated for impairment					633	720
Allowance for loan losses	644	932	644	945	644	720
Ending balance	644	945	644	945
Beginning balance	648	932	720	877
Provisions	26	1	(20)	(69)
Charge-offs	(36)	0	(68)	(54)
Recoveries	6	12	12	191
Consumer Portfolio Segment [Member] \| Home Equity And Second Mortgage [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses	0		0		0	0
Ending balance	0		0
Beginning balance			0
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member]
Ending allowance balance attributable to loans:
Allowance individually evaluated for impairment					0	0
Allowance collectively evaluated for impairment					258	275
Allowance for loan losses	258	336	258	344	258	275
Ending balance	258	344	258	344
Beginning balance	264	336	275	289
Provisions	44	60	95	128
Charge-offs	(79)	(84)	(203)	(172)
Recoveries	29	$ 32	91	$ 99
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member] \| Receivables Acquired with Deteriorated Credit Quality [Member]
Ending allowance balance attributable to loans:
Allowance for loan losses	0		0		$ 0	$ 0
Ending balance	$ 0		0
Beginning balance			$ 0

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A valuation allowance for financing receivables that are expected to be uncollectible.

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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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-Publisher FASB

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of direct write-downs of financing receivables charged against the allowance.

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- Definition

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

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-Topic 942

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