Note 11 - Accrued Pension Liabilities (Details) - Plan Asset Allocations	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Note 11 - Accrued Pension Liabilities (Details) - Plan Asset Allocations [Line Items]
Plan asset allocations	100.00%	100.00%
Other Assets [Member]
Note 11 - Accrued Pension Liabilities (Details) - Plan Asset Allocations [Line Items]
Plan asset allocations	100.00%	100.00%

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(i)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(i)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e2446-114920

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