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Stockholders' Equity (Details) (USD $) | 12 Months Ended
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Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Warrants Outstanding, March 31, 2015 | 3,145,650 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
Number of Warrants Exercisable, March 31, 2015 | 3,140,250 rtgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsEquityInstrumentsExercisableNumber
Warrants Exercisable Weighted Average Remaining Life | 1 year 1 month 6 days
Warrant [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Warrants Outstanding, March 31, 2014 | 3,140,250 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Number of Warrants Granted | 5,400 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsGranted / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Number of Warrants Exercised | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Number of Warrants Forfeited | 0 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsForfeitures / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Number of Warrants Outstanding, March 31, 2015 | 3,145,650 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Number of Warrants Exercisable, March 31, 2015 | 3,140,250 rtgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsEquityInstrumentsExercisableNumber / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Weighted Average Exercise Price Outstanding, March 31, 2014 | 7.30 rtgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsEquityInstrumentsOutstandingWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Weighted Average Exercise Price Granted | 9.06 rtgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsEquityInstrumentsGrantedWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Weighted Average Exercise Price, Exercised | 0 rtgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsEquityInstrumentsExercisedWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Weighted Average Exercise Price Forfeited | 0 rtgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsEquityInstrumentsForfeitedWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Weighted Average Exercise Price Outstanding, March 31, 2015 | 7.31 rtgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsEquityInstrumentsOutstandingWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Weighted Average Exercise Price Exercisable, March 31, 2015 | 7.30 rtgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentOtherThanOptionsEquityInstrumentsExercisableWeightedAverageExercisePrice / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Weighted Average Remaining Life Outstanding, March 31, 2015 | 1 year 1 month 6 days
Warrants Exercisable Weighted Average Remaining Life | 1 year 1 month 6 days
Intrinsic Value Outstanding, March 31, 2015 | 0 us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember
Intrinsic Value Exercisable, March 31, 2015 | 0 rtgn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueExercisable / us-gaap_StatementEquityComponentsAxis = us-gaap_WarrantMember

X
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- Definition Weighted average exercise price of other than options exercisable, including both vested and non-vested instruments. + References No definition available. + Details
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- Definition Weighted average exercise price of other than options exercised, including both vested and non-vested instruments. + References No definition available. + Details
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- Definition Weighted average exercise price of other than options forfeited, including both vested and non-vested instruments. + References No definition available. + Details
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- Definition Weighted average exercise price of other than options outstanding, including both vested and non-vested instruments. + References No definition available. + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of other than options outstanding and currently exercisable. + References No definition available. + Details
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- Definition Weighted average remaining contractual term of exercisable other than options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Intrinsic value of equity-based compensation awards outstanding. Excludes stock and unit options. + References No definition available. + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of non-option equity instruments exercised by participants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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