Note 12 - Postretirement Medical Benefits (Details) - Estimated Future Benefit Payments (Postretirement Medical Benefits [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2013
Postretirement Medical Benefits [Member]
Note 12 - Postretirement Medical Benefits (Details) - Estimated Future Benefit Payments [Line Items]
2014	$ 340
2015	355
2016	377
2017	422
2018	461
2019-2023	2,909
Total	$ 4,864

Defined Benefit Plan Expected Future Benefit Payments Ten Fiscal Years Thereafter

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- Definition

Amount of benefits expected to be paid in the five fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ 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 (f)

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

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- Definition

Amount of benefits expected to be paid in the next fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the fifth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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- Definition

Amount of benefits expected to be paid in the fourth fiscal year following the latest fiscal year from a defined benefit plan.

+ References

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Amount of benefits expected to be paid in the third fiscal year following the latest fiscal year from a defined benefit plan.

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- Definition

Amount of benefits expected to be paid in the second fiscal year following the latest fiscal year from a defined benefit plan.

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