Description of Company and Basis of Presentation (Details)	6 Months Ended
Jun. 30, 2015 Program
Description of Company and Basis of Presentation [Abstract]
Number of programs in clinical development for cancer indications	2

Represents the number of programs in clinical development for cancer indications.

No definition available.

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