Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY (Details Textual)

v2.4.1.9
STOCKHOLDERS' EQUITY (Details Textual) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Class of Stock [Line Items]    
Stock Options Exercise Per Share $ 10.61rei_StockOptionsExercisePerShare  
Common Stock [Member]    
Class of Stock [Line Items]    
Share Price   $ 4.50us-gaap_SharePrice
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
Stock Issued During Period Shares Stock Options Cashless Exercised 10,000rei_StockIssuedDuringPeriodSharessTockOptionsCashlessExercised
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
20,361rei_StockIssuedDuringPeriodSharessTockOptionsCashlessExercised
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
Stock Options Exercise Per Share $ 2.00rei_StockOptionsExercisePerShare
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
$ 14.55rei_StockOptionsExercisePerShare
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
Stock Options Exercise Shares Held Shares 1,885rei_StockOptionsExerciseSharesHeldShares
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
4,639rei_StockOptionsExerciseSharesHeldShares
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
Stock Options Exercise Shares Held Value $ 20,000rei_StockOptionsExerciseSharesHeldValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
$ 67,500rei_StockOptionsExerciseSharesHeldValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
Options exercised (in shares) 8,115us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
 
Stock Issued During Period, Value, Stock Options Exercised 62,500us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
22,500us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
Stock Issued During Period, Shares, Issued for Services 25,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
5,000us-gaap_StockIssuedDuringPeriodSharesIssuedForServices
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
Common Stock [Member] | Exercise Price 2 Member    
Class of Stock [Line Items]    
Stock Issued During Period Shares Stock Options Cashless Exercised 20,000rei_StockIssuedDuringPeriodSharessTockOptionsCashlessExercised
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= rei_ExercisePriceTwoMember
 
Stock Options Exercise Per Share $ 2.00rei_StockOptionsExercisePerShare
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= rei_ExercisePriceTwoMember
$ 2.00rei_StockOptionsExercisePerShare
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= rei_ExercisePriceTwoMember
Stock Options Exercise Shares Held Value   $ 20,000rei_StockOptionsExerciseSharesHeldValue
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= rei_ExercisePriceTwoMember
Common Stock [Member] | Exercise Price 4.5 Member    
Class of Stock [Line Items]    
Stock Issued During Period Shares Stock Options Cashless Exercised 5,000rei_StockIssuedDuringPeriodSharessTockOptionsCashlessExercised
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= rei_ExercisePriceFourPointFiveMember
 
Stock Options Exercise Per Share $ 4.50rei_StockOptionsExercisePerShare
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= rei_ExercisePriceFourPointFiveMember
 
Options exercised (in shares) 25,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= rei_ExercisePriceFourPointFiveMember
 
Common Stock [Member] | Exercise Price 5.5 Member    
Class of Stock [Line Items]    
Stock Issued During Period Shares Stock Options Cashless Exercised   5,000rei_StockIssuedDuringPeriodSharessTockOptionsCashlessExercised
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= rei_ExercisePriceFivePointFiveMember
Stock Options Exercise Per Share   $ 5.50rei_StockOptionsExercisePerShare
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CommonStockMember
/ us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis
= rei_ExercisePriceFivePointFiveMember