Note 3 - Loans and Allowance for Loan Losses (Details) - Troubled Debt Restructurings During the Period (Troubled Debt Restructuring [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2014	Sep. 30, 2013
Commercial Real Estate Portfolio Segment [Member]
Troubled debt restructurings:
Number of Contracts	1	4
Pre-Modification Outstanding Balance	$ 115	$ 657
Post-Modification Outstanding Balance	115	657
Residential Portfolio Segment [Member]
Troubled debt restructurings:
Number of Contracts		1
Pre-Modification Outstanding Balance		160
Post-Modification Outstanding Balance		$ 160

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

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration