Note 5 - Loans (Details) - Troubled Debt Restructurings (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014
Non Farm Nonresidential [Member]
Note 5 - Loans (Details) - Troubled Debt Restructurings [Line Items]
Number of loans	2
Recorded Investment	$ 2,597
Loans, Gross Excluding Other Loans Held For Sale [Member]
Note 5 - Loans (Details) - Troubled Debt Restructurings [Line Items]
Number of loans	2
Recorded Investment	$ 2,597

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

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

Name:	us-gaap_FinancingReceivableModificationsSubsequentDefaultRecordedInvestment1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration