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Taxes (Details Textual) (USD $)
3 Months Ended 12 Months Ended 36 Months Ended
Mar. 31, 2015
Dec. 31, 2010
Dec. 31, 2006
Dec. 31, 2014
Taxes [Line Items]        
Effective Income Tax Rate Reconciliation, Percent, Total 34.00%us-gaap_EffectiveIncomeTaxRateContinuingOperations      
Vat And Withholding Taxes     $ 800,000relv_VatAndWithholdingTaxes  
Interest Penalty Percentage     20.00%relv_InterestPenaltyPercentage  
Selling, General and Administrative Expense   185,000us-gaap_SellingGeneralAndAdministrativeExpense    
Management Estimated Reserve For Tax $ 128,000relv_ManagementEstimatedReserveForTax     $ 122,000relv_ManagementEstimatedReserveForTax