Note 7 - Loans (Details) - Troubled Debt Restructuring (USD $)	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
Special Reserve	$ 11,044,000		$ 11,798,000
Commercial Loans [Member] \| Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	1	2
Pre-Modification Recorded Investment	850,000	8,243,000
Post-Modification Recorded Investment	850,000	8,243,000
Special Reserve		1,035,000
Commercial Mortgage Loans [Member] \| Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	3
Pre-Modification Recorded Investment	8,613,000
Post-Modification Recorded Investment	8,613,000
Residential Mortgage Loans [Member] \| Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	4	2
Pre-Modification Recorded Investment	1,522,000	671,000
Post-Modification Recorded Investment	1,374,000	671,000
Charge-offs	148,000
Special Reserve	46,000	36,000
Accruing Troubled Debt Restructuring [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	8	4
Pre-Modification Recorded Investment	10,985,000	8,914,000
Post-Modification Recorded Investment	10,837,000	8,914,000
Charge-offs	148,000
Special Reserve	$ 46,000	$ 1,071,000

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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=35738203&loc=SL6953676-111524

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Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ 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

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Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5212-111524

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