Note 3 - Loans and Allowance for Loan Losses - Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans	$ 429,025	$ 437,231
Less undisbursed portion of loans in process	(19,155)	(25,020)
Principal loan balance	409,870	412,211
Deferred loan origination fees, net	1,040	1,041
Allowance for loan losses	(3,631)	(3,634)	$ (3,418)	$ (3,386)
Loans, net	407,279	409,618
Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member]
Loans	134,298	136,399
Allowance for loan losses	(301)	(219)	(271)	(380)
Real Estate Mortgage Portfolio Segment [Member] \| Land Loan [Member]
Loans	21,248	18,198
Principal loan balance	21,248	18,198
Deferred loan origination fees, net	16	17
Allowance for loan losses	(156)	(133)	(109)	(56)
Real Estate Mortgage Portfolio Segment [Member] \| Construction Loans [Member]
Loans	31,207	28,854
Principal loan balance	25,313	20,995
Deferred loan origination fees, net	(7)	(10)
Allowance for loan losses	(291)	(245)	(223)	(80)
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Loan [Member]
Loans	95,471	100,133
Principal loan balance	95,471	100,133
Deferred loan origination fees, net	(41)	(42)
Allowance for loan losses	(1,520)	(1,622)	(1,585)	(1,670)
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Construction [Member]
Loans	13,261	17,161
Commercial Portfolio Segment [Member]
Loans	33,186	34,114
Principal loan balance	33,186	34,114
Deferred loan origination fees, net	1	2
Allowance for loan losses	(276)	(291)	(244)	(198)
Consumer Portfolio Segment [Member] \| Home Equity and Second Mortgage [Member]
Loans	49,423	49,802
Principal loan balance	49,423	49,802
Deferred loan origination fees, net	980	987
Allowance for loan losses	(680)	(710)	(698)	(683)
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Loans	38,809	38,361
Consumer Portfolio Segment [Member] \| Loans Secured by Deposits [Member]
Loans	1,294	1,751
Consumer Portfolio Segment [Member] \| Unsecured Loan [Member]
Loans	3,553	3,744
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member]
Loans	7,275	8,714
Principal loan balance	50,931	52,570
Deferred loan origination fees, net
Allowance for loan losses	$ (407)	$ (414)	$ (288)	$ (319)

Represents the loans and leases receivable principal balance.

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
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- Definition

Amount of undisbursed portion of the loan receivable balance (loans in process). Excludes loans and leases covered under loss sharing agreements.

+ References

No definition available.

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 310
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Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements.

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