Note 3 - Loans and Allowance for Loan Losses (Details) - Activity for Troubled Debt Restructurings - USD ($)	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Commercial Portfolio Segment [Member] \| Originated Loan [Member] \| Commercial and Industrial [Member]
Commercial Loan Portfolio:
Beginning Balance	$ 2,028,000	$ 7,026,000
Ending Balance	1,946,000	6,556,000
Charge-Offs	0	0
Payments	(101,000)	(1,155,000)
Transfers to ORE	0	0
Net Additions/Deletions	19,000	685,000
Commercial Portfolio Segment [Member] \| Originated Loan [Member] \| Vacant Land and Land Development and Residential Construction Loan [Member]
Commercial Loan Portfolio:
Beginning Balance	2,086,000	2,680,000
Ending Balance	2,062,000	2,654,000
Charge-Offs	0	0
Payments	(24,000)	(26,000)
Transfers to ORE	0	0
Net Additions/Deletions	0	0
Commercial Portfolio Segment [Member] \| Originated Loan [Member] \| Real Estate Owner Occupied Loan [Member]
Commercial Loan Portfolio:
Beginning Balance	1,400,000	17,160,000
Ending Balance	1,369,000	16,966,000
Charge-Offs	0	0
Payments	(31,000)	(194,000)
Transfers to ORE	0	0
Net Additions/Deletions	0	0
Commercial Portfolio Segment [Member] \| Originated Loan [Member] \| Real Estate Non Owner Occupied Loan [Member]
Commercial Loan Portfolio:
Beginning Balance	10,657,000	17,439,000
Ending Balance	10,529,000	16,063,000
Charge-Offs	0	0
Payments	(128,000)	(1,376,000)
Transfers to ORE	0	0
Net Additions/Deletions	0	0
Commercial Portfolio Segment [Member] \| Originated Loan [Member] \| Real Estate Multi Family and Residential Rental Loan [Member]
Commercial Loan Portfolio:
Beginning Balance	476,000	505,000
Ending Balance	469,000	498,000
Charge-Offs	0	0
Payments	(7,000)	(7,000)
Transfers to ORE	0	0
Net Additions/Deletions	0	0
Commercial Portfolio Segment [Member] \| Acquired Loan [Member] \| Commercial and Industrial [Member]
Commercial Loan Portfolio:
Beginning Balance	1,686,000	1,439,000
Ending Balance	1,687,000	1,519,000
Charge-Offs	(48,000)	0
Payments	0	0
Transfers to ORE	0	0
Net Additions/Deletions	49,000	80,000
Commercial Portfolio Segment [Member] \| Acquired Loan [Member] \| Vacant Land and Land Development and Residential Construction Loan [Member]
Commercial Loan Portfolio:
Beginning Balance	0	0
Ending Balance	0	0
Charge-Offs	0	0
Payments	0	0
Transfers to ORE	0	0
Net Additions/Deletions	0	0
Commercial Portfolio Segment [Member] \| Acquired Loan [Member] \| Real Estate Owner Occupied Loan [Member]
Commercial Loan Portfolio:
Beginning Balance	1,652,000	1,569,000
Ending Balance	1,455,000	1,492,000
Charge-Offs	0	0
Payments	(197,000)	(179,000)
Transfers to ORE	0	0
Net Additions/Deletions	0	102,000
Commercial Portfolio Segment [Member] \| Acquired Loan [Member] \| Real Estate Non Owner Occupied Loan [Member]
Commercial Loan Portfolio:
Beginning Balance	647,000	64,000
Ending Balance	637,000	62,000
Charge-Offs	0	0
Payments	(10,000)	(2,000)
Transfers to ORE	0	0
Net Additions/Deletions	0	0
Commercial Portfolio Segment [Member] \| Acquired Loan [Member] \| Real Estate Multi Family and Residential Rental Loan [Member]
Commercial Loan Portfolio:
Beginning Balance	331,000	381,000
Ending Balance	278,000	333,000
Charge-Offs	0	0
Payments	(53,000)	(48,000)
Transfers to ORE	0	0
Net Additions/Deletions	0	0
Retail Portfolio Segment [Member] \| Originated Loan [Member] \| Home Equity and Other [Member]
Commercial Loan Portfolio:
Beginning Balance	146,000	0
Ending Balance	146,000	0
Charge-Offs	0	0
Payments	0	0
Transfers to ORE	0	0
Net Additions/Deletions	0	0
Retail Portfolio Segment [Member] \| Originated Loan [Member] \| 1-4 Family Mortgages [Member]
Commercial Loan Portfolio:
Beginning Balance	128,000	1,967,000
Ending Balance	126,000	302,000
Charge-Offs	0	(125,000)
Payments	(2,000)	(1,540,000)
Transfers to ORE	0	0
Net Additions/Deletions	0	0
Retail Portfolio Segment [Member] \| Acquired Loan [Member] \| Home Equity and Other [Member]
Commercial Loan Portfolio:
Beginning Balance	141,000	26,000
Ending Balance	161,000	0
Charge-Offs	0	0
Payments	(6,000)	(26,000)
Transfers to ORE	0	0
Net Additions/Deletions	26,000	0
Retail Portfolio Segment [Member] \| Acquired Loan [Member] \| 1-4 Family Mortgages [Member]
Commercial Loan Portfolio:
Beginning Balance	316,000	178,000
Ending Balance	335,000	177,000
Charge-Offs	0	0
Payments	0	(1,000)
Transfers to ORE	0	0
Net Additions/Deletions	$ 19,000	$ 0

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- Definition

A financing receivable which had its terms modified during the period and is now considered a troubled restructuring.

+ References

No definition available.

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- Definition

Reflects the amount of the charge-off related to a troubled debt restructuring.

+ References

No definition available.

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- Definition

The cash outflow associated with a financing receivable classified as a troubled debt restructuring.

+ References

No definition available.

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- Definition

The transfer of a financing receivable classified as a troubled debt restructuring to other real estate.

+ References

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=25495931&loc=d3e18845-111554

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

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