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Organization of the Company (Details)	12 Months Ended
	Dec. 31, 2011 item
Nature of Operations
Age criteria for enrollment of patients for front line treatment of sapacitabine oral capsules, minimum	70

X

- 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

X

- Details

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