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Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Nonperforming Financial Instruments [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Nonperforming loans	$ 8,214,000	$ 29,432,000
Originated Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Originated Loan [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Nonaccrual loans	2,590,000	26,048,000
Nonperforming loans	2,590,000	26,048,000
Acquired Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	26,000
Acquired Loan [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	43,000	26,000
Nonaccrual loans	5,581,000	3,358,000
Nonperforming loans	5,624,000	3,384,000
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Nonperforming loans	5,647,000	25,233,000
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Commercial and Industrial [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Nonperforming loans	671,000	6,478,000
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Vacant Land and Land Development and Residential Construction Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Nonperforming loans	170,000	209,000
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Real Estate Owner Occupied Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Nonperforming loans	2,262,000	18,062,000
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Real Estate Non Owner Occupied Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Nonperforming loans	79,000	378,000
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Real Estate Multi Family and Residential Rental Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Nonperforming loans	2,465,000	106,000
Commercial Portfolio Segment [Member] | Originated Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Commercial and Industrial [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Vacant Land and Land Development and Residential Construction Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Owner Occupied Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Non Owner Occupied Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Originated Loan [Member] | Real Estate Multi Family and Residential Rental Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Acquired Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Commercial and Industrial [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Vacant Land and Land Development and Residential Construction Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Owner Occupied Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Non Owner Occupied Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Commercial Portfolio Segment [Member] | Acquired Loan [Member] | Real Estate Multi Family and Residential Rental Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Nonperforming loans	2,567,000	4,199,000
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Home Equity and Other [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Nonperforming loans	749,000	800,000
Retail Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | 1-4 Family Mortgages [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Nonperforming loans	1,818,000	3,399,000
Retail Portfolio Segment [Member] | Originated Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Retail Portfolio Segment [Member] | Originated Loan [Member] | Home Equity and Other [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Retail Portfolio Segment [Member] | Originated Loan [Member] | 1-4 Family Mortgages [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	0
Retail Portfolio Segment [Member] | Acquired Loan [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	26,000
Retail Portfolio Segment [Member] | Acquired Loan [Member] | Home Equity and Other [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	0	26,000
Retail Portfolio Segment [Member] | Acquired Loan [Member] | 1-4 Family Mortgages [Member]
Note 3 - Loans and Allowance for Loan Losses (Details) - Nonperforming Loans [Line Items]
Loans past due 90 days or more still accruing interest	$ 0	$ 0

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- Definition

Amount of financing receivables which are past due 90 days or more and still accruing interest and nonaccrual loans.

+ References

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- Definition

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

+ References

Reference 1: 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=49124121&loc=d3e5111-111524

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

Reference 1: 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=49124121&loc=d3e5111-111524

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