Represents the number of shares of common stock committed to purchase under the purchase agreement.

No definition available.

Name:	cycc_CommonStockPurchaseAgreementShares
Namespace Prefix:	cycc_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the term of the common stock purchase agreement.

+ References

No definition available.

+ Details

Name:	cycc_CommonStockPurchaseAgreementTermPeriod
Namespace Prefix:	cycc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of shares that the entity agreed to sale under the underwriting agreement.

+ References

No definition available.

+ Details

Name:	cycc_CommonStockUnderwritingAgreementShares
Namespace Prefix:	cycc_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents amount of economic right settled for payments.

+ References

No definition available.

+ Details

Name:	cycc_EconomicRightSettledForPayments
Namespace Prefix:	cycc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Definition

Represents the amount of expenses related to acquisition of common and preferred stock.

+ References

No definition available.

+ Details

Name:	cycc_ExpenseRelatedToStockPurchaseAgreement
Namespace Prefix:	cycc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the number of shares issued during the period, which were subject to the underwriters' over-allotment option.

+ References

No definition available.

+ Details

Name:	cycc_NumberOfSharesIssuedDuringPeriodSubjectToUnderwritersOverAllotmentOption
Namespace Prefix:	cycc_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ 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)(2))

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 2

-Article 4

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of warrants or rights outstanding.

+ 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))

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Article 4

+ Details

Name:	us-gaap_ClassOfWarrantOrRightOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Face amount or stated value per share of common stock.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount per share or per unit assigned to the consideration received of equity securities issued for development stage entities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 915

-SubTopic 215

-Section 45

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6472370&loc=d3e38297-110927

+ Details

Name:	us-gaap_EquityIssuancePerShareAmount
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum amount of purchase arrangement in which the entity has agreed to expend funds to procure goods or services from a supplier.

+ References

No definition available.

+ Details

Name:	us-gaap_PurchaseObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of shares issued as consideration for cash for development stage entities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 915

-SubTopic 215

-Section 45

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6472370&loc=d3e38297-110927

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesIssuedForCash
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of shares issued for noncash consideration for development stage entities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 915

-SubTopic 215

-Section 45

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6472370&loc=d3e38297-110927

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of new stock issued during the period.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Value of shares issued as consideration for cash for development stage entities.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
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- Details

Name:	cycc_EquityOfferingComponentsAxis=cycc_February2007StockIssuanceMember
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- Details

Name:	cycc_EquityOfferingComponentsAxis=cycc_July2009StockIssuanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	cycc_EquityOfferingComponentsAxis=cycc_May2013SaleOfCommonStockMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

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- Details

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Stockholders' Equity (Detail Textuals 2) (USD $)	1 Months Ended	12 Months Ended		0 Months Ended	12 Months Ended	0 Months Ended	1 Months Ended
Stockholders' Equity (Detail Textuals 2) (USD $)	Apr. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Nov. 14, 2013	Dec. 31, 2012	May 16, 2013	May 21, 2013
Equity Offering [Line Items]
Purchase price for shares issued under purchase agreement		$ 3,132,000	$ 9,126,000
Common stock, par value (in dollars per share)		$ 0.001	$ 0.001
Proceeds from sale of common stock, net of certain fees and expenses		9,289,000	19,006,000
Change in valuation of financial instruments associated with stock purchase agreement		342,000	98,000
Economic Rights settled for payments	600,000cycc_EconomicRightSettledForPayments
Common shares issued		1,341,129
Common stock
Equity Offering [Line Items]
Number of shares issued under purchase agreement		950,000	2,133,401
Purchase price for shares issued under purchase agreement		1,000	2,000
Shares sold (in shares)		2,857,143	6,833,334
Proceeds from sale of common stock, net of certain fees and expenses		3,000	6,000
November 2013 Stock Purchase Agreement \| Common stock \| Aspire Capital Fund, LLC
Equity Offering [Line Items]
Number of shares issued under purchase agreement		950,000		511,509
Purchase price for shares issued under purchase agreement		3,100,000		2,000,000
Period of common stock purchase agreement				2 years
Stock issued for non-cash consideration				166,105
November 2013 Stock Purchase Agreement \| Common stock \| Maximum \| Aspire Capital Fund, LLC
Equity Offering [Line Items]
Shares committed to purchase				3,042,038
Common stock purchase agreement, purchase commitment				18,000,000
December 2012 Stock Purchase Agreement \| Common stock \| Aspire Capital Fund, LLC
Equity Offering [Line Items]
Change in valuation of financial instruments associated with stock purchase agreement					400,000
May 2013 Underwriting Agreement
Equity Offering [Line Items]
Shares committed for sale under agreement						6,666,667
Common stock, par value (in dollars per share)						$ 0.001
Offering price per unit (in dollars per unit)						$ 3.00	$ 3.00
Shares sold (in shares)							6,833,334
Number of share sold that were subject to the underwriters' over-allotment option							166,667
Proceeds from sale of common stock, net of certain fees and expenses							$ 19,000,000
July 2009 Stock Issuance
Equity Offering [Line Items]
Common shares issued		98,893
February 2007 stock issuance
Equity Offering [Line Items]
Number of shares of common stock issued in connection with warrants		151,773