Note 9 - Loans (Details) - Troubled Debt Restructurings (USD $)	3 Months Ended	12 Months Ended
Jun. 30, 2013	Mar. 31, 2013
Troubled debt restructurings:
Residential real estate	4
Residential real estate	$ 3,481,000	$ 3,529,000
Residential Real Estate Loans [Member]
Troubled debt restructurings:
Residential real estate		2
Residential real estate	0	339
Residential real estate	$ 0	$ 486
Residential real estate		75

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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=28368275&loc=SL6953676-111524

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- Definition

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

+ References

+ Details

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- Definition

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

+ References

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953682-111524

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