Represents the additional term provided for standard-of-care treatment under collaborative agreement.

No definition available.

Name:	rdus_CollaborativeAgreementAdditionalTermProvidedForStandardOfCareTreatment
Namespace Prefix:	rdus_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of euro-denominated payments required over the course of the Clinical Study under the collaborative agreement.

+ References

No definition available.

+ Details

Name:	rdus_CollaborativeAgreementAmountOfEuroDenominatedPaymentsRequiredOverCourseOfClinicalStudy
Namespace Prefix:	rdus_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the amount of U.S. dollar-denominated payments required over the course of the Clinical Study under the collaborative agreement.

+ References

No definition available.

+ Details

Name:	rdus_CollaborativeAgreementAmountOfUSDollarDenominatedPaymentsRequiredOverCourseOfClinicalStudy
Namespace Prefix:	rdus_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Collaborative Agreement Initial Term Provided for Standard of Care Treatment

+ References

No definition available.

+ Details

Name:	rdus_CollaborativeAgreementInitialTermProvidedforStandardofCareTreatment
Namespace Prefix:	rdus_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_CollaborativeArrangementsAndNoncollaborativeArrangementTransactionsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_TypeOfArrangementAxis=us-gaap_CollaborativeArrangementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rdus_CollaborativeArrangementsTypeOfAgreementAxis=rdus_LetterOfIntentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rdus_ClinicalStudyByPhaseAxis=rdus_AbaloparatideSCPhase3ClinicalExtensionStudyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=rdus_NordicMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rdus_CollaborativeArrangementsTypeOfAgreementAxis=rdus_WorkStatementNB3AmendmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	rdus_CollaborativeArrangementsTypeOfAgreementAxis=rdus_WorkStatementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Research Agreements (Details) - Clinical Trial Services Agreement - Abaloparatide-SC Phase 3 Extension Clinical Study - Nordic	1 Months Ended
	Apr. 30, 2015 USD ($)	Apr. 30, 2015 EUR (€)	Feb. 28, 2013 USD ($)	Feb. 28, 2013 EUR (€)
Letter of Intent
Research Agreements
Collaborative agreement initial term provided for standard of care treatment			6 months	6 months
Additional term provided for standard-of-care treatment			18 months	18 months
NB-3 Amendment \| Maximum
Research Agreements
Amount of euro-denominated payments required over the course of Clinical Trial	$ 4,300,000	€ 4,100,000
Clinical Trial Services Agreement \| Maximum
Research Agreements
Amount of euro-denominated payments required over the course of Clinical Trial			$ 12,500,000	€ 11,900,000.0
Amount of U.S. dollar-denominated payments required over the course of Clinical Trial			$ 1,100,000.0