Annual report pursuant to Section 13 and 15(d)

Financings - Additional Information (Detail)

v2.4.1.9
Financings - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
0 Months Ended 12 Months Ended
Aug. 20, 2014
Dec. 31, 2014
Dec. 31, 2013
Oct. 24, 2013
Financing Activities and Borrowing Arrangements [Line Items]        
Line of credit facility, maximum borrowing amount $ 25us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity $ 25us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity    
Bank loan payable   8.8us-gaap_LongTermLoansFromBank    
Debt instrument agreement period 3 years      
Debt instrument repayment date Aug. 20, 2017 Apr. 01, 2016    
Borrowing capacity   4.5us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity    
Minimum fixed charges ratio   110.00%rvlt_MinimumFixedChargeCoverageRatio    
Accounts receivable financing arrangements, interest rate spread on prime rate   1.75%us-gaap_LoansReceivableBasisSpreadOnVariableRate    
Accounts receivable financing arrangements, minimum interest rate   5.00%us-gaap_DebtorInPossessionFinancingInterestRateOnBorrowingsOutstanding    
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
   
Subsidiary One        
Financing Activities and Borrowing Arrangements [Line Items]        
Accounts receivable financing arrangements, maximum available amount for borrowing       2us-gaap_DebtorInPossessionFinancingAmountArranged
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= rvlt_SubsidiaryOneMember
Borrowings under accounts receivable financing arrangements     $ 0.9us-gaap_DebtorInPossessionFinancingBorrowingsOutstanding
/ us-gaap_RelatedPartyTransactionsByRelatedPartyAxis
= rvlt_SubsidiaryOneMember