Note 3 - Loans Receivable (Details) - Past Due and Non-accrual Status of Loans - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Construction:
Loans, past due	$ 1,470	$ 974
Loans, current	365,888	330,705
Loans	367,358	331,679
Loans, nonaccrual	426	1,254
Financing Receivables, 30 to 59 Days Past Due [Member]
Construction:
Loans, past due	498	211
Financing Receivables, 60 to 89 Days Past Due [Member]
Construction:
Loans, past due	84	502
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Construction:
Loans, past due	888	261
Construction Loan Portfolio Segment [Member] \| Residential [Member]
Construction:
Loans, current	11,779	10,019
Loans	11,779	10,019
Construction Loan Portfolio Segment [Member] \| Land Acquisition, Development and Commercial [Member]
Construction:
Loans, past due	11
Loans, current	27,429	23,686
Loans	27,440	23,686
Loans, nonaccrual	11
Construction Loan Portfolio Segment [Member] \| Land Acquisition, Development and Commercial [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Construction:
Loans, past due	11
Real Estate Portfolio Segment [Member] \| Residential [Member]
Construction:
Loans, past due	347	642
Loans, current	99,921	85,627
Loans	100,268	86,269
Loans, nonaccrual		475
Real Estate Portfolio Segment [Member] \| Residential [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Construction:
Loans, past due	297
Real Estate Portfolio Segment [Member] \| Residential [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Construction:
Loans, past due		381
Real Estate Portfolio Segment [Member] \| Residential [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Construction:
Loans, past due	50	261
Real Estate Portfolio Segment [Member] \| Commercial [Member}
Construction:
Loans, past due	836	85
Loans, current	140,116	134,985
Loans	140,952	135,070
Loans, nonaccrual	368	758
Real Estate Portfolio Segment [Member] \| Commercial [Member} \| Financing Receivables, 30 to 59 Days Past Due [Member]
Construction:
Loans, past due	44
Real Estate Portfolio Segment [Member] \| Commercial [Member} \| Financing Receivables, 60 to 89 Days Past Due [Member]
Construction:
Loans, past due		85
Real Estate Portfolio Segment [Member] \| Commercial [Member} \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Construction:
Loans, past due	792
Commercial, Industrial and Agricultural Portfolio Segment [Member]
Construction:
Loans, past due	171	96
Loans, current	52,841	44,711
Loans	53,012	44,807
Loans, nonaccrual	47
Commercial, Industrial and Agricultural Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Construction:
Loans, past due	52	96
Commercial, Industrial and Agricultural Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Construction:
Loans, past due	84
Commercial, Industrial and Agricultural Portfolio Segment [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Construction:
Loans, past due	35
Equity Lines Portfolio Segment [Member]
Construction:
Loans, past due	105	105
Loans, current	26,271	24,225
Loans	26,376	24,330
Equity Lines Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Construction:
Loans, past due	105	105
Consumer Portfolio Segment [Member]
Construction:
Loans, past due		46
Loans, current	7,531	7,452
Loans	$ 7,531	7,498
Loans, nonaccrual		21
Consumer Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Construction:
Loans, past due		10
Consumer Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Construction:
Loans, past due		$ 36

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- Definition

Financing receivables that are current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953401-111524

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Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5111-111524

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+ References

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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.

+ 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=28367877&loc=d3e4428-111522

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