Note 13 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Note 13 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value [Line Items]
Defined benefit pension plan assets	$ 14,999	$ 14,540
Fair Value, Inputs, Level 1 [Member]
Note 13 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value [Line Items]
Defined benefit pension plan assets	244	133
Fair Value, Inputs, Level 2 [Member]
Note 13 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value [Line Items]
Defined benefit pension plan assets	14,755	14,407
Fair Value, Inputs, Level 3 [Member]
Note 13 - Benefit Plans (Details) - Defined Benefit Pension Plan Assets Measured at Fair Value [Line Items]
Defined benefit pension plan assets	$ 0	$ 0

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 35

-Paragraph 50

-URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930

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