XML 47 R35.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Segment Reporting (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 Segment | Sep. 30, 2012 | Dec. 31, 2012
Segment Reporting [Abstract] |  |  |  |  |
Number of operating segments |  |  | 1 |  |
Sales in the United States representing percentage of total sales (in hundredths) | 87.00% |  | 89.00% |  |
Identifiable long-lived assets | 90.00% |  | 90.00% |  | 98.00%
Revenue from External Customer [Line Items] |  |  |  |  |
Net sales | $ 363,269 | $ 300,586 | $ 1,109,529 | $ 834,284 |
Residential power products [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net sales | 192,728 | 190,974 | 644,588 | 489,454 |
Industrial and commercial power products [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net sales | 151,488 | 93,607 | 411,995 | 299,718 |
Other [Member] |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |
Net sales | $ 19,053 | $ 16,005 | $ 52,946 | $ 45,112 |

X
- Definition Percentage representing company's identifiable long-lived assets are located in the United States. + References No definition available. + Details
Name: | gnrc_IdentifiableLongLivedAssets
Namespace Prefix: | gnrc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage representing sales from particular country in terms of total sales. + References No definition available. + Details
Name: | gnrc_PercentageRepresentingSalesFromParticularCountry
Namespace Prefix: | gnrc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_EntityWideInformationRevenueFromExternalCustomerLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
Name: | us-gaap_NumberOfOperatingSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- 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=6880815&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
Name: | us-gaap_SalesRevenueGoodsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration