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Organization of the Company (Details Textuals) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
United kingdoms medical research council | NSCLC and Nasopharyngeal Cancer
Organization [Line Items]
Grant award amount	$ 1.6us-gaap_ProceedsFromGrantors / cycc_GrantAwardeeAxis = cycc_UnitedKingdomsMedicalResearchCouncilMember / cycc_ProgramAxis = cycc_NsclcAndNasopharyngealCancerMember
United kingdoms medical research council | Investigational new drug (IND)
Organization [Line Items]
Grant award amount	1.8us-gaap_ProceedsFromGrantors / cycc_GrantAwardeeAxis = cycc_UnitedKingdomsMedicalResearchCouncilMember / cycc_ProgramAxis = cycc_InvestigationalNewDrugMember
Biomedical catalyst of United Kingdom government | Investigational new drug (IND)
Organization [Line Items]
Grant award amount	$ 3.5us-gaap_ProceedsFromGrantors / cycc_GrantAwardeeAxis = cycc_BiomedicalCatalystOfTheUnitedKingdomGovernmentMember / cycc_ProgramAxis = cycc_InvestigationalNewDrugMember

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- Definition

Cash received from grantors during the current period related to operating activities. This element represents receipts from a guarantor for the amount of guarantee provided.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

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