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Summary of Significant Accounting Policies (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Product sales
Percentage of current wholesale acquisition price to be deducted from gross invoice sales price to record deferred revenue	5.00%
Nonrefundable revenue recognized	$ 0

X

- Definition

Represents the percentage of current wholesale acquisition price to be deducted from gross invoice sales price to record deferred revenue.

+ References

No definition available.

+ Details

Name:	cycc_DeferredRevenuePercentageOfCurrentWholesaleAcquisitionPriceToBeDeductedFromGrossInvoiceSalesPrice
Namespace Prefix:	cycc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

This item represents the amount of revenue recognized which is attributable to customer refundable fees that are no longer refundable.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 605

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 13.A.4(a))

-URI http://asc.fasb.org/extlink&oid=6600647&loc=d3e214044-122780



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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 13

-Section A

-Paragraph a

-Subsection 4

+ Details

Name:	us-gaap_CustomerRefundableFeesRevenueRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_RevenueRecognitionAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration