Quarterly report pursuant to Section 13 or 15(d)

Financings - Additional Information (Detail)

v2.4.1.9
Financings - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
1 Months Ended 3 Months Ended
Aug. 30, 2014
Mar. 31, 2015
Aug. 31, 2014
Apr. 30, 2015
Apr. 20, 2015
Financing Activities and Borrowing Arrangements [Line Items]          
Line of credit facility, maximum borrowing amount $ 25us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity   $ 25us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity    
Bank loan payable   12.2us-gaap_LongTermLoansFromBank      
Debt instrument repayment date Aug. 20, 2017 Apr. 01, 2016      
Subsequent Event          
Financing Activities and Borrowing Arrangements [Line Items]          
Guaranteed borrowing capacity       5rvlt_LineOfCreditFacilitySubLimitGuaranteeMaximumBorrowingCapacity
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
 
Bank loan payable         13.6us-gaap_LongTermLoansFromBank
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Value Lighting          
Financing Activities and Borrowing Arrangements [Line Items]          
Note payable to creditor   3.7us-gaap_ShortTermDebtRefinancedAmount
/ us-gaap_BusinessAcquisitionAxis
= rvlt_ValueLightingMember
     
Notes payable, maturity   2018-11      
Balloon payment   $ 1.4us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid
/ us-gaap_BusinessAcquisitionAxis
= rvlt_ValueLightingMember