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Note 5 - Segment Reporting (Details) - Net Sales by Segment (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Revenue from External Customer [Line Items] |  |  |  |
Net sales | $ 352,305 | $ 363,269 | $ 1,056,922 | $ 1,109,529
Residential Power Products [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net sales | 183,747 | 192,728 | 527,308 | 644,588
Commercial and Industrial Power Products [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net sales | 146,411 | 151,488 | 467,248 | 411,995
Other Products and Services [Member] |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |
Net sales | $ 22,147 | $ 19,053 | $ 62,366 | $ 52,946

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- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales 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) -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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