Note 12 - Employee Benefit Plans (Details) - Employee Benefit Plans (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares (in Shares)	3,692	4,044
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price per share	$ 20.88	$ 19.44
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Price per share	$ 21.74	$ 20.88

The weighted average of per share prices paid for shares purchased on the open market for issuance to employees under the plan.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant