Note 6 - Loans Receivable and Allowances for Loan Losses - Impaired Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Commercial Real Estate Portfolio Segment [Member]
With no related allowance - Recorded investment	$ 12,333	$ 11,692
With no related allowance - Unpaid principal balance	12,334	11,730
With related allowance - Recorded investment	7,193	511
With related allowance - Unpaid principal balance	7,194	511
Related allowance	1,317	47
Recorded investment	19,526	12,203
Unpaid principal balance	19,528	12,241
Construction and Land Development Portfolio Segment [Member]
With no related allowance - Recorded investment	56	117
With no related allowance - Unpaid principal balance	2,050	2,208
With related allowance - Recorded investment	4
With related allowance - Unpaid principal balance	101
Related allowance	4
Recorded investment	60	117
Unpaid principal balance	2,151	2,208
Commercial Portfolio Segment [Member]
With no related allowance - Recorded investment	1,675	2,381
With no related allowance - Unpaid principal balance	2,804	3,683
With related allowance - Recorded investment	3,618	3,112
With related allowance - Unpaid principal balance	6,285	5,779
Related allowance	1,677	1,111
Recorded investment	5,293	5,493
Unpaid principal balance	9,089	9,462
Owner Occupied Real Estate [Member]
With no related allowance - Recorded investment	950	507
With no related allowance - Unpaid principal balance	963	507
With related allowance - Recorded investment	1,298	2,862
With related allowance - Unpaid principal balance	1,298	2,876
Related allowance	304	1,059
Recorded investment	2,248	3,369
Unpaid principal balance	2,261	3,383
Consumer Portfolio Segment [Member]
With no related allowance - Recorded investment	856	800
With no related allowance - Unpaid principal balance	1,156	1,084
With related allowance - Recorded investment	292	147
With related allowance - Unpaid principal balance	292	147
Related allowance	79	21
Recorded investment	1,148	947
Unpaid principal balance	1,448	1,231
With no related allowance - Recorded investment	15,870	15,497
With no related allowance - Unpaid principal balance	19,307	19,212
With related allowance - Recorded investment	12,405	6,632
With related allowance - Unpaid principal balance	15,170	9,313
Related allowance	3,381	2,238
Recorded investment	28,275	22,129
Unpaid principal balance	$ 34,477	$ 28,525

Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	instant

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(4)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524

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- Definition

Amount of investment in impaired financing receivables for which there is no related allowance for credit losses.

+ References

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- Definition

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- Definition

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