Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions [Line Items]
Number, Balance	48	36
Provision for loan losses	$ (185)us-gaap_ProvisionForLoanAndLeaseLosses	$ (1,040)us-gaap_ProvisionForLoanAndLeaseLosses
Principal, New modifications/ agreements	0	5,000
Modified Secured Loan [Member] \| Beginning of Period [Member]
Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions [Line Items]
Number, Balance	5	5
Principal, Balance	3,947	6,085
Modified Secured Loan [Member] \| End of Period [Member]
Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions [Line Items]
Number, Balance	3	5
Principal, Balance	3,233	3,947
Modified Secured Loan [Member]
Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions [Line Items]
Number, New modifications/ agreements		1
Principal, New modifications/ agreements		325
Number, Paid off/Foreclosed	(2)	(1)
Principal, Paid off/Foreclosed	(374)	(2,140)
Principal, Principal collected	(340)	(323)
Workout Agreements [Member] \| Beginning of Period [Member]
Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions [Line Items]
Number, Balance	3	4
Principal, Balance	1,097	1,126
Workout Agreements [Member] \| End of Period [Member]
Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions [Line Items]
Number, Balance	3	3
Principal, Balance	488	1,097
Workout Agreements [Member]
Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions [Line Items]
Number, New modifications/ agreements	1	2
Principal, New modifications/ agreements	97	847
Number, Paid off/Foreclosed		(1)
Principal, Paid off/Foreclosed		(417)
Expired/Voided	(1)	(2)
Expired/Voided	(665)	(449)
Principal, Principal collected	(41)	(10)
Troubled Debt Restructuring [Member] \| Beginning of Period [Member]
Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions [Line Items]
Number, Balance	5	6
Principal, Balance	4,228	8,042
Troubled Debt Restructuring [Member] \| End of Period [Member]
Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions [Line Items]
Number, Balance	4	5
Principal, Balance	3,599	4,228
Troubled Debt Restructuring [Member]
Note 4 - Loans (Details) - Modifications, Workout Agreements and Troubled Debt Restructurings on Secured Loan Transactions [Line Items]
Provision for loan losses	120	130
Number, New modifications/ agreements		2
Principal, New modifications/ agreements		990
Number, Paid off/Foreclosed	(1)	(3)
Principal, Paid off/Foreclosed	(325)	(4,507)
Principal, Principal collected	$ (304)	$ (297)

Number of mortgage loans that are expired or voided.

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Number of mortgage loans with new modifications.

+ References

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Number of mortgage loans that are paid off or foreclosed.

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- Definition

Total carrying amount of mortgage loans as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule IV)

-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 29

-Article 12

Reference 3: http://www.xbrl.org/2003/role/presentationRef

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-Number 210

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-Paragraph c

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 948

-SubTopic 310

-Section S99

-Paragraph 1

-Subparagraph (SX 210.12-29.6)

-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

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- Definition

The amount of principal collected on mortgage loans on real estate during the reporting period.

+ References

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- Definition

The amount of mortgage loans on real estate which were foreclosed on during the reporting period.

+ References

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Data Type:	xbrli:monetaryItemType
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- Definition

Total amount of new mortgage loans on real estate during the reporting period.

+ References

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- Definition

Indicates the number of mortgages under each classification.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 10

-Section S99

-Paragraph 6

-Subparagraph (SX 210.5-04.(c) Schedule IV)

-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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- Definition

The amount of reductions in principal on mortgage loans other than foreclosures, costs of mortgages sold, and amortization of premium during the reporting period.

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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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