Note 4 - Fair Value Measurements (Details) - Assets Measured on a Nonrecurring Basis (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Assets measured on a nonrecurring basis:
Impaired loans	$ 16,892	$ 18,965
Fair Value, Inputs, Level 3 [Member]
Assets measured on a nonrecurring basis:
Impaired loans	15,510	17,158
Other real estate owned	2,656	2,698
Estimate of Fair Value Measurement [Member]
Assets measured on a nonrecurring basis:
Impaired loans	15,510	17,158
Other real estate owned	$ 2,656	$ 2,698

Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4437-111522

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 28

-Article 12

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph c

-Subparagraph Schedule III

-Article 5

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