Note 3 - Loans Receivable and Allowance for Loan Losses (Details) - Company’s Loan Portfolio - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 485,183	$ 484,369
Allowance for loan losses	(5,247)	(5,242)	$ (5,193)	$ (4,924)
Loans receivable, net	479,936	479,127
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	61,027	59,752
Allowance for loan losses	(1,083)	(1,027)	(1,297)	(1,918)
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	243,823	245,828
Allowance for loan losses	(1,943)	(1,970)	(2,024)	(1,419)
Construction Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	21,748	15,551
Allowance for loan losses	(650)	(486)	(222)	(63)
Construction to Permanent Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	3,638	4,880
Allowance for loan losses	(121)	(123)	(191)	(215)
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	108,111	110,837
Allowance for loan losses	(624)	(740)	(730)	(831)
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	46,836	47,521
Allowance for loan losses	$ (609)	$ (677)	$ (711)	$ (478)

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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.

+ 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 (g)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524

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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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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
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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. Includes loans held for sale. 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 942
-SubTopic 210
-Section S99
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