Note 13 - Segment and Related Information (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Note 13 - Segment and Related Information (Details) [Line Items]
Number of Reportable Segments	2us-gaap_NumberOfReportableSegments
Disposal Group, Including Discontinued Operation, Depreciation and Amortization	$ 900,000	$ 4,400,000	$ 3,900,000
Payments to Acquire Property, Plant, and Equipment	106,973,000	67,929,000	43,955,000
Discontinued Operations [Member]
Note 13 - Segment and Related Information (Details) [Line Items]
Payments to Acquire Property, Plant, and Equipment	$ 1,000,000	$ 1,700,000	$ 1,600,000

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Amount of depreciation and amortization attributable to disposal group.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

+ Details

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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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- Details

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