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Shareholders' Equity (Schedule of Common Stock Sold) (Details) (USD $)
 0 Months Ended 1 Months Ended 12 Months Ended
Oct. 03, 2012
Aug. 28, 2012
Jul. 30, 2012
Feb. 28, 2015
May 31, 2014
Dec. 31, 2012
Shareholders' Equity [Abstract]            
Issuances of common stock, shares 1,250,000us-gaap_StockIssuedDuringPeriodSharesNewIssues 1,900,000us-gaap_StockIssuedDuringPeriodSharesNewIssues 589,227us-gaap_StockIssuedDuringPeriodSharesNewIssues 50,181us-gaap_StockIssuedDuringPeriodSharesNewIssues 750,000us-gaap_StockIssuedDuringPeriodSharesNewIssues 3,739,227us-gaap_StockIssuedDuringPeriodSharesNewIssues
Warrants issued 250,000refr_WarrantsIssuedToInvestorsDuringPeriod 380,000refr_WarrantsIssuedToInvestorsDuringPeriod 117,846refr_WarrantsIssuedToInvestorsDuringPeriod     747,846refr_WarrantsIssuedToInvestorsDuringPeriod
Unit price $ 4.49us-gaap_SharesIssuedPricePerShare $ 2.97us-gaap_SharesIssuedPricePerShare $ 2.97us-gaap_SharesIssuedPricePerShare      
Proceeds $ 5,275,750us-gaap_ProceedsFromIssuanceOfCommonStock [1] $ 5,229,201us-gaap_ProceedsFromIssuanceOfCommonStock [2] $ 1,745,549us-gaap_ProceedsFromIssuanceOfCommonStock [3]   $ 3,278,250us-gaap_ProceedsFromIssuanceOfCommonStock $ 12,250,500us-gaap_ProceedsFromIssuanceOfCommonStock
Fees in connection with stock sale $ 336,750us-gaap_PaymentsOfStockIssuanceCosts $ 413,719us-gaap_PaymentsOfStockIssuanceCosts $ 4,455us-gaap_PaymentsOfStockIssuanceCosts      
[1] Net of fees of $336,750
[2] Net of fees of $413,719
[3] Net of fees of $4,455