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Stockholders' Equity (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2014
Warrants outstanding
Common Shares Issuable	1,341,129us-gaap_ClassOfWarrantOrRightOutstanding
Weighted Average Exercise Price (in dollars per share)	$ 13.05us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
January 2010 stock issuance, one
Warrants outstanding
Expiration Date	2015
Common Shares Issuable	101,785us-gaap_ClassOfWarrantOrRightOutstanding / cycc_EquityOfferingComponentsAxis = cycc_January2010StockIssuanceOneMember
Weighted Average Exercise Price (in dollars per share)	$ 22.82us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / cycc_EquityOfferingComponentsAxis = cycc_January2010StockIssuanceOneMember
January 2010 stock issuance, two
Warrants outstanding
Expiration Date	2015
Common Shares Issuable	100,714us-gaap_ClassOfWarrantOrRightOutstanding / cycc_EquityOfferingComponentsAxis = cycc_January2010StockIssuanceTwoMember
Weighted Average Exercise Price (in dollars per share)	$ 19.95us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / cycc_EquityOfferingComponentsAxis = cycc_January2010StockIssuanceTwoMember
October 2010 stock issuance
Warrants outstanding
Expiration Date	2015
Common Shares Issuable	594,513us-gaap_ClassOfWarrantOrRightOutstanding / cycc_EquityOfferingComponentsAxis = cycc_October2010StockIssuanceMember
Weighted Average Exercise Price (in dollars per share)	$ 13.44us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / cycc_EquityOfferingComponentsAxis = cycc_October2010StockIssuanceMember
July 2011 stock issuance
Warrants outstanding
Expiration Date	2016
Common Shares Issuable	544,117us-gaap_ClassOfWarrantOrRightOutstanding / cycc_EquityOfferingComponentsAxis = cycc_July2011StockIssuanceMember
Weighted Average Exercise Price (in dollars per share)	$ 9.52us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 / cycc_EquityOfferingComponentsAxis = cycc_July2011StockIssuanceMember

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(4))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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

-Publisher FASB

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-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Article 4

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