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CONCENTRATION OF CREDIT RISK (Details) (One Customer [Member], USA [Member], Customer Concentration Risk [Member])
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Revenue [Member]
   
Concentration Risk [Line Items]    
Concentration risk, percentage (in hundredths) 28.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ribt_Customer1Member
/ us-gaap_StatementBusinessSegmentsAxis
= country_US
27.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_SalesRevenueGoodsNetMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ribt_Customer1Member
/ us-gaap_StatementBusinessSegmentsAxis
= country_US
Accounts Receivable [Member]
   
Concentration Risk [Line Items]    
Concentration risk, percentage (in hundredths) 2.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ribt_Customer1Member
/ us-gaap_StatementBusinessSegmentsAxis
= country_US
2.00%us-gaap_ConcentrationRiskPercentage1
/ us-gaap_ConcentrationRiskByBenchmarkAxis
= us-gaap_AccountsReceivableMember
/ us-gaap_ConcentrationRiskByTypeAxis
= us-gaap_CustomerConcentrationRiskMember
/ us-gaap_MajorCustomersAxis
= ribt_Customer1Member
/ us-gaap_StatementBusinessSegmentsAxis
= country_US