Note 6 - Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Commercial Real Estate Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Loans receivable, total past due
Commercial Real Estate Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Loans receivable, total past due	15	7,657
Commercial Real Estate Portfolio Segment [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans receivable, total past due	13,303	5,913
Commercial Real Estate Portfolio Segment [Member]
Loans receivable, total past due	13,318	13,570
Loans receivable, current	356,466	336,156
Loans receivable	369,784	349,726
Loans receivable greater than 90 days and accruing
Construction and Land Development Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Loans receivable, total past due
Construction and Land Development Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Loans receivable, total past due
Construction and Land Development Portfolio Segment [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans receivable, total past due	60	117
Construction and Land Development Portfolio Segment [Member]
Loans receivable, total past due	60	117
Loans receivable, current	40,402	46,430
Loans receivable	40,462	46,547
Loans receivable greater than 90 days and accruing
Commercial Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Loans receivable, total past due		1,661
Commercial Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Loans receivable, total past due	663	997
Commercial Portfolio Segment [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans receivable, total past due	3,154	3,156
Commercial Portfolio Segment [Member]
Loans receivable, total past due	3,817	5,814
Loans receivable, current	195,332	176,036
Loans receivable	199,149	181,850
Loans receivable greater than 90 days and accruing
Owner Occupied Real Estate [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Loans receivable, total past due		800
Owner Occupied Real Estate [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Loans receivable, total past due	46	469
Owner Occupied Real Estate [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans receivable, total past due	1,582	2,894
Owner Occupied Real Estate [Member]
Loans receivable, total past due	1,628	4,163
Loans receivable, current	263,617	242,235
Loans receivable	265,245	246,398
Loans receivable greater than 90 days and accruing
Consumer Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Loans receivable, total past due		285
Consumer Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Loans receivable, total past due	384	192
Consumer Portfolio Segment [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans receivable, total past due	743	542
Consumer Portfolio Segment [Member]
Loans receivable, total past due	1,127	1,019
Loans receivable, current	52,086	47,107
Loans receivable	53,213	48,126
Loans receivable greater than 90 days and accruing
Residential Portfolio Segment [Member] \| Financing Receivables, 30 to 59 Days Past Due [Member]
Loans receivable, total past due		132
Residential Portfolio Segment [Member] \| Financing Receivables, 60 to 89 Days Past Due [Member]
Loans receivable, total past due
Residential Portfolio Segment [Member] \| Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans receivable, total past due
Residential Portfolio Segment [Member]
Loans receivable, total past due		132
Loans receivable, current	2,338	2,248
Loans receivable	2,338	2,380
Loans receivable greater than 90 days and accruing
Financing Receivables, 30 to 59 Days Past Due [Member]
Loans receivable, total past due		2,878
Financing Receivables, 60 to 89 Days Past Due [Member]
Loans receivable, total past due	1,108	9,315
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Loans receivable, total past due	18,842	12,622
Loans receivable, total past due	19,950	24,815
Loans receivable, current	910,241	850,212
Loans receivable	930,191	875,027
Loans receivable greater than 90 days and accruing

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

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 7
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5111-111524

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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=66008989&loc=SL6953401-111524

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- Definition

Recorded Investment in financing receivables that are past due at the balance sheet date.

+ 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 7A
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953401-111524

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- Definition

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=65884687&loc=d3e4428-111522

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