XML 60 R44.htm IDEA: XBRL DOCUMENT v3.8.0.1

Note 1 - Description of Business (Details Textual)		12 Months Ended
	Mar. 01, 2016	Dec. 31, 2017
Pramac [Member]
Number of Countries Where Product is Sold by Subsidiary	150	150

X

- Definition

Represents the number of countries in where the subsidiary sells its products.

+ References

No definition available.

+ Details

Name:	gnrc_NumberOfCountriesWhereProductIsSoldBySubsidiary
Namespace Prefix:	gnrc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=gnrc_PramacMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: