Note 12 - Pension and Other Postretirement Benefit Plans (Details) - Assumptions Used to Develop Periodic Pension Benefit for the Retirement Plan	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 12 - Pension and Other Postretirement Benefit Plans (Details) - Assumptions Used to Develop Periodic Pension Benefit for the Retirement Plan [Line Items]
Weighted average discount rate	3.75%	4.25%	5.75%
Retirement Plan [Member]
Note 12 - Pension and Other Postretirement Benefit Plans (Details) - Assumptions Used to Develop Periodic Pension Benefit for the Retirement Plan [Line Items]
Weighted average discount rate	3.75%	4.25%	5.25%
Expected long-term rate of return on assets	7.50%	7.50%	8.00%

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Glossary Expected Long-Term Rate of Return on Plan Assets

-URI http://asc.fasb.org/extlink&oid=6512013

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (k)(3)

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

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