Note 5 - Loans (Details) - Troubled Debt Restructurings $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015 USD ($)
Financing Receivable, Modifications [Line Items]
Number of contracts	119	4,000
Pre-modification outstanding recorded investment		$ 1,082
Post-modification outstanding recorded investment		$ 1,098
Commercial Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts		1,000
Pre-modification outstanding recorded investment		$ 823
Post-modification outstanding recorded investment		$ 823
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Individual Tax Identification Number Loan [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts		3,000
Pre-modification outstanding recorded investment		$ 259
Post-modification outstanding recorded investment		$ 275

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Number of 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 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524

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