Note 8 - Employee Benefit Plans (Details) - Future Benefit Payments (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Pension Plan, Defined Benefit [Member]
Note 8 - Employee Benefit Plans (Details) - Future Benefit Payments [Line Items]
2013	$ 4,769
2014	4,951
2015	5,083
2016	5,320
2017	5,601
Years 2018-2022	34,011
Other Postretirement Benefit Plan, Defined Benefit [Member]
Note 8 - Employee Benefit Plans (Details) - Future Benefit Payments [Line Items]
2013	3
2014	8
2015	6
2016	8
2017	7
Years 2018-2022	$ 26

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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

+ Details

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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

+ Details

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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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- Definition

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

+ References

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