Note 3 - Loans and Allowance for Loan Losses - Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
Loans	$ 403,794	$ 402,740
Less undisbursed portion of loans in process	(16,187)	(19,037)
Principal loan balance	387,607	383,703
Deferred loan origination fees, net	895	837
Allowance for loan losses	(3,418)	(3,386)	$ (3,319)	$ (3,415)
Loans, net	385,084	381,154
Real Estate Mortgage Portfolio Segment [Member] \| Residential Loan [Member]
Loans	136,714	137,842
Allowance for loan losses	(271)	(380)	(470)	(527)
Real Estate Mortgage Portfolio Segment [Member] \| Land Loan [Member]
Loans	16,252	13,895
Principal loan balance	16,252	13,895
Deferred loan origination fees, net	16	14
Allowance for loan losses	(109)	(56)	(84)	(157)
Real Estate Mortgage Portfolio Segment [Member] \| Construction Loans [Member]
Loans	30,207	29,561
Principal loan balance	22,646	19,445
Deferred loan origination fees, net	1	0
Allowance for loan losses	(223)	(80)	(45)	(47)
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Loan [Member]
Loans	92,825	96,462
Principal loan balance	92,825	96,462
Deferred loan origination fees, net	(33)	(42)
Allowance for loan losses	(1,585)	(1,670)	(1,468)	(1,541)
Real Estate Mortgage Portfolio Segment [Member] \| Commercial Real Estate Construction [Member]
Loans	8,626	8,921
Commercial Portfolio Segment [Member]
Loans	26,097	24,056
Principal loan balance	26,097	24,056
Deferred loan origination fees, net	3	3
Allowance for loan losses	(244)	(198)	(273)	(261)
Consumer Portfolio Segment [Member] \| Home Equity and Second Mortgage [Member]
Loans	44,456	42,908
Principal loan balance	44,456	42,908
Deferred loan origination fees, net	825	782
Allowance for loan losses	(698)	(683)	(721)	(626)
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Loans	34,657	34,279
Consumer Portfolio Segment [Member] \| Loans Secured by Saving Accounts [Member]
Loans	1,853	1,879
Consumer Portfolio Segment [Member] \| Unsecured Loan [Member]
Loans	3,661	3,912
Consumer Portfolio Segment [Member] \| Other Consumer Loan [Member]
Loans	8,446	9,025
Principal loan balance	48,617	49,095
Deferred loan origination fees, net	0	0
Allowance for loan losses	$ (288)	$ (319)	$ (258)	$ (256)

Represents the loans and leases receivable principal balance.

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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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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- Definition

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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524

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- Definition

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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533

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