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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
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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 + Details
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