Annual report pursuant to Section 13 and 15(d)

Net Long Lived Assets by Geographic Locations (Detail)

v2.4.1.9
Net Long Lived Assets by Geographic Locations (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Segment Reporting Information [Line Items]      
Non Current Assets $ 35,995us-gaap_NoncurrentAssets $ 18,626us-gaap_NoncurrentAssets $ 12,372us-gaap_NoncurrentAssets
United States      
Segment Reporting Information [Line Items]      
Non Current Assets 35,883us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US 		18,489us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US 		12,364us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= country_US
Other      
Segment Reporting Information [Line Items]      
Non Current Assets $ 112us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= rvlt_OtherCountriesMember 		$ 137us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= rvlt_OtherCountriesMember 		$ 8us-gaap_NoncurrentAssets
/ us-gaap_StatementGeographicalAxis
= rvlt_OtherCountriesMember