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Note 14 - Commitments and Off-balance Sheet Risk (Details) - Exposure to Credit Losses - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Note 14 - Commitments and Off-balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	$ 821,738,000	$ 781,748,000
Loan Origination Commitments [Member]
Note 14 - Commitments and Off-balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	178,034,000	110,126,000
Standby Letters of Credit [Member]
Note 14 - Commitments and Off-balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	34,946,000	35,461,000
Commercial Portfolio Segment [Member] | Unused lines of Credit [Member]
Note 14 - Commitments and Off-balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	522,658,000	554,856,000
1-4 Family Mortgages [Member] | Unused lines of Credit [Member]
Note 14 - Commitments and Off-balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	61,905,000	60,983,000
Consumer Portfolio Segment [Member] | Unused lines of Credit [Member]
Note 14 - Commitments and Off-balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	15,612,000	11,649,000
Consumer Other Financing Receivable 1 [Member] | Unused lines of Credit [Member]
Note 14 - Commitments and Off-balance Sheet Risk (Details) - Exposure to Credit Losses [Line Items]
Contractual amounts of financial instruments with off-balance sheet risk	$ 8,583,000	$ 8,673,000

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No definition available.

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- Definition

The fair value of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611

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