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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 | 1,250,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues |  | 1,900,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues |  | 589,227 us-gaap_StockIssuedDuringPeriodSharesNewIssues |  | 50,181 us-gaap_StockIssuedDuringPeriodSharesNewIssues | 750,000 us-gaap_StockIssuedDuringPeriodSharesNewIssues | 3,739,227 us-gaap_StockIssuedDuringPeriodSharesNewIssues
Warrants issued | 250,000 refr_WarrantsIssuedToInvestorsDuringPeriod |  | 380,000 refr_WarrantsIssuedToInvestorsDuringPeriod |  | 117,846 refr_WarrantsIssuedToInvestorsDuringPeriod |  |  |  | 747,846 refr_WarrantsIssuedToInvestorsDuringPeriod
Unit price | $ 4.49 us-gaap_SharesIssuedPricePerShare |  | $ 2.97 us-gaap_SharesIssuedPricePerShare |  | $ 2.97 us-gaap_SharesIssuedPricePerShare |  |  |  |
Proceeds | $ 5,275,750 us-gaap_ProceedsFromIssuanceOfCommonStock | [1] | $ 5,229,201 us-gaap_ProceedsFromIssuanceOfCommonStock | [2] | $ 1,745,549 us-gaap_ProceedsFromIssuanceOfCommonStock | [3] |  | $ 3,278,250 us-gaap_ProceedsFromIssuanceOfCommonStock | $ 12,250,500 us-gaap_ProceedsFromIssuanceOfCommonStock
Fees in connection with stock sale | $ 336,750 us-gaap_PaymentsOfStockIssuanceCosts |  | $ 413,719 us-gaap_PaymentsOfStockIssuanceCosts |  | $ 4,455 us-gaap_PaymentsOfStockIssuanceCosts |  |  |  |
[1] | Net of fees of $336,750
[2] | Net of fees of $413,719
[3] | Net of fees of $4,455

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- Definition Warrants issued to investors during period. + References No definition available. + Details
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- Definition The cash outflow for cost incurred directly with the issuance of an equity security. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition Amount per share or per unit of equity securities issued by non-development stage entity. + References No definition available. + Details
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- Details
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- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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