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Note 9 - Segment Information (Details) - Revenues by Geographical Areas (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Note 9 - Segment Information (Details) - Revenues by Geographical Areas [Line Items]
Revenues	$ 68,039	$ 106,063	$ 150,236	$ 198,228
Reportable Geographical Components [Member] | UNITED STATES
Note 9 - Segment Information (Details) - Revenues by Geographical Areas [Line Items]
Revenues	66,461	102,901	146,389	190,879
Reportable Geographical Components [Member] | All Foreign Countries [Member]
Note 9 - Segment Information (Details) - Revenues by Geographical Areas [Line Items]
Revenues	$ 1,578	$ 3,162	$ 3,848	$ 7,349

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(a))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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