Description of Company and Basis of Presentation (Details)	3 Months Ended
Mar. 31, 2016 Patient ClinicalSite
Description of Company and Basis of Presentation [Abstract]
Number of patients enrolled \| Patient	433
Number of clinical sites \| ClinicalSite	79

Represents the number of targeted patients enrolled.

No definition available.

Name:	cytr_NumberOfPatientsEnrolled
Namespace Prefix:	cytr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration