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Note 4 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Troubled Debt Restructurings $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)
Financing Receivable, Modifications [Line Items]
Number of contracts		0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts	1	1	2
Pre-modification outstanding principal balance	$ 2,484	$ 1,007	$ 2,668
Post-modification outstanding principal balance	$ 2,484	$ 907	$ 2,693
Commercial Real Estate Portfolio Segment [Member] | Commercial Real Estate, Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts		1	1
Pre-modification outstanding principal balance		$ 1,007	$ 184
Post-modification outstanding principal balance		$ 907	$ 209
Commercial Real Estate Portfolio Segment [Member] | Multifamily Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of contracts	1		1
Pre-modification outstanding principal balance	$ 2,484		$ 2,484
Post-modification outstanding principal balance	$ 2,484		$ 2,484

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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=49124121&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables 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



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+ 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=49124121&loc=SL6953676-111524

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