Note 12 - Pension and Other Postretirement Benefit Plans (Details) - Assumptions Used in Determining the Actuarial Present Value of the Accumulated Postretirement Benefit Obligations	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Rate of increase in health care costs
Initial	10.00%	10.50%	11.50%
Ultimate (year 2018)	5.00%	5.50%	5.50%
Initial [Member] \| Postretirement Plans [Member]
Rate of increase in health care costs
Initial	9.00%	10.00%
Ultimate Year 2018 [Member] \| Postretirement Plans [Member]
Rate of increase in health care costs
Ultimate (year 2018)	5.00%	5.00%
Postretirement Plans [Member]
Note 12 - Pension and Other Postretirement Benefit Plans (Details) - Assumptions Used in Determining the Actuarial Present Value of the Accumulated Postretirement Benefit Obligations [Line Items]
Discount rate	4.60%	3.75%

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- Definition

The interest rate used to adjust for the time value of money for the plan.

+ References

+ Details

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- Definition

The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (l)

-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

-Glossary Health Care Cost Trend Rate

-URI http://asc.fasb.org/extlink&oid=6514820

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- Definition

The ultimate trend rate for health care costs.

+ References

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