Note 6 - Loans Receivable and Allowances for Loan Losses - Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Dec. 31, 2016
Beginning balance:	$ 9,155	$ 8,703
Charge-offs	(10)	(46)
Recoveries	36	72
Provision for loan losses		300
Ending balance	9,181	9,029
Allowance for loan losses, individually evaluated for impairment			$ 3,622	$ 3,468
Allowance for loan losses, collectively evaluated for impairment			5,559	5,687
Total allowance for loan losses	9,155	8,703	9,181	9,155
Loans evaluated individually			28,888	28,170
Loans evaluated collectively			997,511	936,874
Total loans receivable			1,026,399	965,044
Commercial Real Estate Portfolio Segment [Member]
Beginning balance:	3,254	2,393
Charge-offs
Recoveries	7
Provision for loan losses	(299)	(348)
Ending balance	2,962	2,045
Allowance for loan losses, individually evaluated for impairment			1,305	1,277
Allowance for loan losses, collectively evaluated for impairment			1,657	1,977
Total allowance for loan losses	3,254	2,393	2,962	3,254
Loans evaluated individually			18,854	19,245
Loans evaluated collectively			375,986	359,274
Total loans receivable			394,840	378,519
Construction and Land Development Portfolio Segment [Member]
Beginning balance:	557	338
Charge-offs
Recoveries
Provision for loan losses	(11)	76
Ending balance	546	414
Allowance for loan losses, individually evaluated for impairment
Allowance for loan losses, collectively evaluated for impairment			546	557
Total allowance for loan losses	557	338	546	557
Loans evaluated individually
Loans evaluated collectively			78,636	61,453
Total loans receivable			78,636	61,453
Commercial Portfolio Segment [Member]
Beginning balance:	2,884	2,932
Charge-offs		(18)
Recoveries	29	72
Provision for loan losses	(143)	(44)
Ending balance	2,770	2,942
Allowance for loan losses, individually evaluated for impairment			1,758	1,624
Allowance for loan losses, collectively evaluated for impairment			1,012	1,260
Total allowance for loan losses	2,884	2,932	2,770	2,884
Loans evaluated individually			5,287	5,180
Loans evaluated collectively			183,586	169,564
Total loans receivable			188,873	174,744
Owner Occupied Real Estate [Member]
Beginning balance:	1,382	2,030
Charge-offs	(8)	(28)
Recoveries
Provision for loan losses	253	89
Ending balance	1,627	2,091
Allowance for loan losses, individually evaluated for impairment			297	274
Allowance for loan losses, collectively evaluated for impairment			1,330	1,108
Total allowance for loan losses	1,382	2,030	1,627	1,382
Loans evaluated individually			3,475	2,325
Loans evaluated collectively			270,521	274,661
Total loans receivable			273,996	276,986
Consumer Portfolio Segment [Member]
Beginning balance:	588	295
Charge-offs	(2)
Recoveries
Provision for loan losses	(11)	17
Ending balance	575	312
Allowance for loan losses, individually evaluated for impairment			262	293
Allowance for loan losses, collectively evaluated for impairment			313	295
Total allowance for loan losses	588	295	575	588
Loans evaluated individually			1,272	1,290
Loans evaluated collectively			66,130	62,370
Total loans receivable			67,402	63,660
Residential Portfolio Segment [Member]
Beginning balance:	58	14
Charge-offs
Recoveries
Provision for loan losses	72	(3)
Ending balance	130	11
Allowance for loan losses, individually evaluated for impairment
Allowance for loan losses, collectively evaluated for impairment			130	58
Total allowance for loan losses	58	14	130	58
Loans evaluated individually				130
Loans evaluated collectively			22,652	9,552
Total loans receivable			22,652	9,682
Unallocated Financing Receivables [Member]
Beginning balance:	432	701
Charge-offs
Recoveries
Provision for loan losses	139	513
Ending balance	571	1,214
Allowance for loan losses, individually evaluated for impairment
Allowance for loan losses, collectively evaluated for impairment			571	432
Total allowance for loan losses	$ 432	$ 701	571	432
Loans evaluated individually
Loans evaluated collectively
Total loans receivable

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

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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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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-Publisher FASB
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-Topic 310
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-Subparagraph (g)
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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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-Paragraph 11B
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-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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The balance of financing receivables that were collectively evaluated for impairment.

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-Publisher FASB
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-Topic 310
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The balance of financing receivables that were individually evaluated for impairment.

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-Publisher FASB
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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
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-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 225
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