Note 5 - Securities (Details) - Fair Market Value of Securities Segregated by Purpose (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged securities	$ 62,905
Public Funds Collateral [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged securities	22,313
Federal Home Loan Bank Borrowings [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged securities	35,806
Interest Rate Swap [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Pledged securities	$ 4,786

Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 50

-Paragraph 1A

-Subparagraph (b)(1)(i)

-URI http://asc.fasb.org/extlink&oid=7523297&loc=SL6224234-111729

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 860

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6467456&loc=d3e113888-111728

Name:	us-gaap_SecurityOwnedAndPledgedAsCollateralFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant