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Note 14 - Weighted-average Assumptions Used to Determine Benefit Obligations (Details)		Dec. 31, 2015	Dec. 31, 2014
Pension Plan [Member]
Discount rate		4.36%	3.97%
Other Pension Plan [Member]
Discount rate		4.39%	3.99%
Rate of compensation increase (1)	[1]
[1] No compensation increase was assumed as the plans were frozen effective December 31, 2008.

X

- Definition

The interest rate used to adjust for the time value of money for the 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 (k)(1)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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X

- Definition

Expected rate of compensation increases (for pay-related plans).

+ 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 (k)(2)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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X

- Details

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X

- Details

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