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Organization of the Company (Details) | 12 Months Ended
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Dec. 31, 2012 item
Nature of Operations |
Age criteria for enrollment of patients for front line treatment of sapacitabine oral capsules, minimum | 70

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- Definition Represents the minimum age of patients to be considered for enrollment for the front line treatment of sapacitabine oral capsules. + References No definition available. + Details
Name: | cycc_AgeCriteriaForEnrollmentOfPatientsForFrontLineTreatmentOfSapacitabineOralCapsulesMinimum
Namespace Prefix: | cycc_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | cycc_NatureOfOperationsAbstract
Namespace Prefix: | cycc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration